{"title":"Hanna Instruments Photometers and Colorimeters","description":"\u003cp\u003e\u003cspan\u003eEliminate uncertainty in your testing process with Hanna Instruments comprehensive selection of Digital Photometers and Colorimeters\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"hanna-hi740318-carrying-case-hi96-photometer-protective","title":"Hanna Instruments Carrying Case HI740318 - Protective Case for HI96 Series Photometers","description":"\u003cp\u003e\u003cstrong\u003eProtect your investment and stay organized\u003c\/strong\u003e with the Hanna Instruments HI740318 carrying case. This professional-grade protective case is custom-designed for HI96 series portable photometers, providing secure storage and transport for your instrument, reagents, and accessories in the lab or field.\u003c\/p\u003e\n\n\u003ch4\u003eSuperior Protection Features:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom-fit design:\u003c\/strong\u003e Precision-molded interior specifically for HI96 series portable photometers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable construction:\u003c\/strong\u003e Rugged exterior protects against impacts, moisture, and environmental hazards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrganized storage:\u003c\/strong\u003e Dedicated compartments for photometer, cuvettes, reagents, and accessories\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure closure:\u003c\/strong\u003e Reliable latching system keeps contents safe during transport\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable design:\u003c\/strong\u003e Compact and lightweight for easy field work and travel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional appearance:\u003c\/strong\u003e Clean, organized presentation for client-facing work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhy a Dedicated Case Matters:\u003c\/h4\u003e\n\u003cp\u003eYour HI96 photometer is a precision instrument that requires protection from drops, moisture, dust, and temperature extremes. The HI740318 carrying case ensures your equipment arrives ready to use, with all necessary accessories organized and accessible. No more searching for reagents or worrying about damaged cuvettes during transport.\u003c\/p\u003e\n\n\u003ch4\u003eProfessional Applications:\u003c\/h4\u003e\n\u003cp\u003eEssential for water treatment professionals, pool service technicians, environmental consultants, aquaculture specialists, and laboratory technicians who need to transport photometric testing equipment between sites. Perfect for field testing, mobile laboratories, client visits, and multi-location operations.\u003c\/p\u003e\n\n\u003ch4\u003eWhat Fits Inside:\u003c\/h4\u003e\n\u003cp\u003eDesigned to accommodate your HI96 series photometer plus essential accessories including glass cuvettes, reagent packets, calibration standards, cleaning supplies, and instruction materials. Everything you need for complete water quality testing in one organized, protective case.\u003c\/p\u003e\n\n\u003ch4\u003eTechnical Specifications:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e HI740318\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e HI96 series portable photometers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.5 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Romania\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProfessional-Grade Quality:\u003c\/h4\u003e\n\u003cp\u003eManufactured by Hanna Instruments to the same exacting standards as their precision testing equipment. Extend the life of your HI96 photometer and maintain professional organization with this purpose-built carrying case.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eCompatible with all HI96 series portable photometers. Photometer and accessories sold separately. A smart investment for professionals who demand reliability and organization.\u003c\/em\u003e\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":41613465878615,"sku":"HI740318","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/carrying-case-for-portable-96-series-photometers_1.jpg?v=1742257589"},{"product_id":"hanna-hi731331-glass-cuvettes-22mm-photometer-turbidity-4-pack","title":"Hanna Instruments Glass Cuvettes HI731331 - 22mm for HI96 Photometers \u0026 Turbidity Meters (4-Pack)","description":"\u003cp\u003e\u003cstrong\u003eMaintain measurement accuracy\u003c\/strong\u003e with Hanna Instruments HI731331 replacement glass cuvettes. These precision-engineered 22mm optically clear glass cuvettes are essential for accurate photometric and turbidity measurements with HI96 series portable photometers and Hanna turbidity meters.\u003c\/p\u003e\n\n\u003ch4\u003ePrecision Features:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptically clear glass:\u003c\/strong\u003e High-quality construction ensures accurate light transmission for reliable measurements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndex mark alignment:\u003c\/strong\u003e Ensures proper positioning in the photometer for consistent results\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 ml level mark:\u003c\/strong\u003e Precisely measure the correct sample volume every time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e22mm diameter:\u003c\/strong\u003e Standard size compatible with HI96 series and turbidity meters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValue pack:\u003c\/strong\u003e Includes 4 replacement cuvettes (caps sold separately as HI731335N)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhy Replace Your Cuvettes:\u003c\/h4\u003e\n\u003cp\u003eClean, scratch-free cuvettes are critical for accurate optical measurements. Even minor scratches, discoloration, or residue can interfere with light transmission and compromise your test results. Regular replacement ensures measurement integrity and reliable data for quality control, compliance testing, and research applications.\u003c\/p\u003e\n\n\u003ch4\u003eOptical System Compatibility:\u003c\/h4\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system-HI96series.png?width=335\u0026amp;name=photometer-optical-system-HI96series.png\" alt=\"Hanna HI96 series photometer optical system diagram\" width=\"335\" srcset=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system-HI96series.png?width=168\u0026amp;name=photometer-optical-system-HI96series.png 168w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system-HI96series.png?width=335\u0026amp;name=photometer-optical-system-HI96series.png 335w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system-HI96series.png?width=503\u0026amp;name=photometer-optical-system-HI96series.png 503w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system-HI96series.png?width=670\u0026amp;name=photometer-optical-system-HI96series.png 670w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system-HI96series.png?width=838\u0026amp;name=photometer-optical-system-HI96series.png 838w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system-HI96series.png?width=1005\u0026amp;name=photometer-optical-system-HI96series.png 1005w\" sizes=\"(max-width: 335px) 100vw, 335px\"\u003e\u003c\/p\u003e\n\n\u003ch4\u003eCompatible Instruments:\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with HI96 series portable photometers and both portable and benchtop Hanna turbidity meters. These are the same high-quality cuvettes supplied with new instruments.\u003c\/p\u003e\n\n\u003ch4\u003eProfessional-Grade Quality:\u003c\/h4\u003e\n\u003cp\u003eManufactured in Romania by Hanna Instruments to exacting optical standards. Essential for laboratories, water treatment facilities, aquaculture operations, pool service professionals, and any application requiring precise colorimetric or turbidity analysis.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Cuvette caps (HI731335N) sold separately. Regular replacement recommended for maintaining measurement accuracy and instrument calibration integrity.\u003c\/em\u003e\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":41690183139415,"sku":"HI731331","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/HI731331N-1200by1200__99003.1575299638_1.jpg?v=1745893833"},{"product_id":"hanna-hi731360-glass-cuvettes-caps-hi977-photometer-2-pack","title":"Hanna Instruments Glass Cuvettes HI731360 - Replacement Cuvettes with Caps for HI977 Photometers (2-Pack)","description":"\u003cp\u003e\u003cstrong\u003eMaintain measurement precision\u003c\/strong\u003e with Hanna Instruments HI731360 replacement glass cuvettes. This professional-grade 2-pack includes optically clear borosilicate glass cuvettes with secure caps, designed specifically for HI977 series portable photometers to ensure accurate, repeatable colorimetric measurements.\u003c\/p\u003e\n\n\u003ch4\u003ePrecision Features:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptically clear borosilicate glass:\u003c\/strong\u003e High-quality construction ensures accurate light transmission for reliable measurements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes caps:\u003c\/strong\u003e Secure caps prevent contamination, evaporation, and spillage during handling and storage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHI977 series compatible:\u003c\/strong\u003e Direct-fit replacement designed specifically for Hanna HI977 portable photometers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional laboratory grade:\u003c\/strong\u003e Meets strict standards for colorimetric analysis and water quality testing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReusable design:\u003c\/strong\u003e Smooth glass surfaces allow thorough cleaning between samples for extended use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValue 2-pack:\u003c\/strong\u003e Includes two complete cuvettes with caps for continuous testing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhy Cuvette Quality Matters:\u003c\/h4\u003e\n\u003cp\u003eAccurate photometric analysis depends on optically consistent cuvettes. Even minor scratches, cloudiness, or contamination can compromise your test results and lead to inaccurate readings. The HI731360 replacement cuvettes maintain the optical clarity and precision your water testing protocols demand, ensuring measurement integrity for quality control, compliance testing, and research applications.\u003c\/p\u003e\n\n\u003ch4\u003eProfessional Applications:\u003c\/h4\u003e\n\u003cp\u003eEssential for laboratories, water treatment facilities, aquaculture operations, pool service professionals, and field testing applications. Keep spare cuvettes on hand to avoid testing delays and maintain uninterrupted workflow when primary cuvettes need cleaning or replacement.\u003c\/p\u003e\n\n\u003ch4\u003eTechnical Specifications:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e HI731360\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Optically clear borosilicate glass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 2 cuvettes with caps per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e HI977 series portable photometers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.5 oz\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProfessional-Grade Quality:\u003c\/h4\u003e\n\u003cp\u003eManufactured by Hanna Instruments to exacting optical standards. These replacement cuvettes are the same high-quality components supplied with new HI977 photometers, ensuring consistent performance and reliable results across all your colorimetric testing applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eCompatible with HI977 series photometers. Regular replacement recommended when cuvettes show signs of scratching, cloudiness, or wear to maintain measurement accuracy.\u003c\/em\u003e\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":41744233758807,"sku":"HI731360","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/HI731360_720x720__83420.1663355915.jpg?v=1748726383"},{"product_id":"hanna-hi97115-marine-master-photometer-bluetooth-waterproof","title":"Hanna HI97115 Marine Master Photometer - 9 Parameter Bluetooth Water Tester","description":"\u003cdiv class=\"productView rca-product-view\" data-event-type=\"product\" data-entity-id=\"7276\" data-name=\"Marine Master Waterproof Wireless Multiparameter Photometer\" data-product-category=\"Industry\/Water, \n            Parameters\/P - Z\/pH, \n            Product\/Aquarium, \n            Product\/Meters, \n            Product\/Meters\/Portable meters, \n            Product\/Meters\/Photometers, \n            Brands\/Marine Line, \n            Parameters\/G - O\/Nitrite, \n            Parameters\/P - Z\/Phosphate, \n            Parameters\/G - O\/Magnesium, \n            Parameters\/G - O\/Nitrate, \n            Parameters\/A - F\/Calcium, \n            Parameters\/A - F\/Alkalinity, \n            Parameters\/A - F\/Ammonia, \n            Black Friday Stock Up\" data-product-brand=\"Dangerous Goods\" data-product-price=\"499.99\" data-product-variant=\"single-product-option\"\u003e\n\u003csection class=\"productView-details product-options\"\u003e\n\u003cdiv class=\"productView-shortDescription\"\u003e\n\u003cp\u003eIdeal for testing saltwater aquariums, reef tanks, and other marine and aquaculture applications.\u003c\/p\u003e\nThe HI97115 is a compact and versatile Marine multiparameter photometer designed to accurately determine pH, Alkalinity, Ammonia, Calcium, Magnesium, Nitrate, Nitrite, and Phosphate levels in aquariums and marine biology applications. The photometer is suitable for field and bench measurements.\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe HI97115 can be used as a stand-alone photometer or can be connected to the Hanna Lab App with a compatible smart device via the integrated Bluetooth\u003csup\u003e®\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003emodule. When connected, Hanna Lab App functions include measurement with the ability to add notes, data logging with extended storage capacity, data sharing, and the ability to create and save method groups.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNo warm up time needed before taking a measurement.\u003c\/li\u003e\n\u003cli\u003eTutorial mode for easy step-by-step instructions.\u003c\/li\u003e\n\u003cli\u003eCAL Check\u003csup\u003eTM\u003c\/sup\u003e for performance verification and calibration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cdiv data-content-region=\"product-before-description\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"productView-description\" data-event-type=\"product\"\u003e\n\u003csection data-content-region=\"product-description-split\"\u003e\u003c\/section\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003csection class=\"banner--product-col2-details grid-container\"\u003e\n\u003cdiv class=\"col2-detail-group grid-x grid-padding-x grid-padding-y align-right\"\u003e\n\u003cdiv class=\"cell small-12  border-after--blue-wide\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\" data-details=\"\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\" data-detail-item=\"\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003cp\u003eThe photometer has an advanced optical system that uses a Light Emitting Diode and a narrow band interference filter for accurate, repeatable readings. The optical system is sealed from outside dust, dirt, and water.\u003c\/p\u003e\n\u003cp\u003eThe meter uses an exclusive positive-locking system to ensure that the cuvettes are placed into the holder in the same position every time.\u003c\/p\u003e\n\u003cp\u003eWith the CAL Check™ functionality, users are able to validate the performance of the instrument at any time. CAL Check™ cuvettes are certified against NIST-traceable reference instrument(s).\u003c\/p\u003e\n\u003cp\u003eThe built-in tutorial mode guides users step-by-step through the measurement process. The tutorial mode includes all steps required for sample preparation, the required reagents and quantities.\u003c\/p\u003e\n\u003cp\u003eSuitable for field or bench measurements, the photometer features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTest capabilities for 9 parameters using 1 device\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNEW!\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eComes with free Hanna Lab app, connects via Bluetooth for easy data tracking, exporting and analysis\u003c\/li\u003e\n\u003cli\u003eSophisticated optical system\u003c\/li\u003e\n\u003cli\u003eMeter validation using certified CAL Check™ cuvettes\u003c\/li\u003e\n\u003cli\u003eTutorial mode guides the user step-by-step\u003c\/li\u003e\n\u003cli\u003eOption to assign locations to logged readings\u003c\/li\u003e\n\u003cli\u003eAuto logging\u003c\/li\u003e\n\u003cli\u003eWaterproof IP67. The case and device both float on water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"col2-detail-group grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12  border-after--blue-wide\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto small-order-1 large-order-2\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/product\/HI97115_front_720x720.jpg?width=720\u0026amp;height=720\u0026amp;name=HI97115_front_720x720.jpg\" sizes=\"(max-width: 720px) 100vw, 720px\" srcset=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/product\/HI97115_front_720x720.jpg?width=360\u0026amp;height=360\u0026amp;name=HI97115_front_720x720.jpg 360w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/product\/HI97115_front_720x720.jpg?width=720\u0026amp;height=720\u0026amp;name=HI97115_front_720x720.jpg 720w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/product\/HI97115_front_720x720.jpg?width=1080\u0026amp;height=1080\u0026amp;name=HI97115_front_720x720.jpg 1080w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/product\/HI97115_front_720x720.jpg?width=1440\u0026amp;height=1440\u0026amp;name=HI97115_front_720x720.jpg 1440w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/product\/HI97115_front_720x720.jpg?width=1800\u0026amp;height=1800\u0026amp;name=HI97115_front_720x720.jpg 1800w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/product\/HI97115_front_720x720.jpg?width=2160\u0026amp;height=2160\u0026amp;name=HI97115_front_720x720.jpg 2160w\" alt=\"HI97115_front_720x720\" width=\"720\" height=\"720\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cell small-12 large-auto small-order-2 large-order-1\" data-details=\"\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\" data-detail-item=\"\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003ch4\u003eCAL Check\u003csup\u003e\u003cspan\u003e \u003c\/span\u003eTM\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eValidation\u003c\/h4\u003e\n\u003cp\u003eHanna’s exclusive CAL Check\u003csup\u003e\u003cspan\u003e \u003c\/span\u003eTM\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003efeature provides a stress-free, straightforward way to ensure your photometer is working properly. Simply insert the certified CAL Check\u003csup\u003e\u003cspan\u003e \u003c\/span\u003eTM\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003estandards and let your meter guide you through validation. If your photometer is out of specification for any reason, simply calibrate to your standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\" data-detail-item=\"\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003ch4\u003eOn-Screen Tutorials\u003c\/h4\u003e\n\u003cp\u003eThe built-in tutorial mode guides users step-by-step through the measurement process. It includes all steps required for sample preparation, the required reagents, and quantities.\u003c\/p\u003e\n\u003cp\u003eTutorial mode can be enabled or disabled from the setup menu.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\" data-detail-item=\"\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003ch4\u003eTank Selection and Multiple Reading Locations Management\u003c\/h4\u003e\n\u003cp\u003eUsers can edit up to 25 different tanks, correlate reading location to any location from the list so that logged data is linked to its reading location.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\" data-detail-item=\"\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003ch4\u003eData Logging\u003c\/h4\u003e\n\u003cp\u003eMissed a measurement? No need to worry because your photometer will automatically log the last 200 measurements. The results can be viewed instantly using the Log Recall Menu.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"col2-detail-group grid-x grid-padding-x grid-padding-y align-right\"\u003e\n\u003cdiv class=\"cell small-12  border-after--blue-wide\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/product\/HI97115_Positive-Locking-System_720x710.jpg?width=720\u0026amp;height=710\u0026amp;name=HI97115_Positive-Locking-System_720x710.jpg\" sizes=\"(max-width: 720px) 100vw, 720px\" srcset=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/product\/HI97115_Positive-Locking-System_720x710.jpg?width=360\u0026amp;height=355\u0026amp;name=HI97115_Positive-Locking-System_720x710.jpg 360w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/product\/HI97115_Positive-Locking-System_720x710.jpg?width=720\u0026amp;height=710\u0026amp;name=HI97115_Positive-Locking-System_720x710.jpg 720w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/product\/HI97115_Positive-Locking-System_720x710.jpg?width=1080\u0026amp;height=1065\u0026amp;name=HI97115_Positive-Locking-System_720x710.jpg 1080w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/product\/HI97115_Positive-Locking-System_720x710.jpg?width=1440\u0026amp;height=1420\u0026amp;name=HI97115_Positive-Locking-System_720x710.jpg 1440w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/product\/HI97115_Positive-Locking-System_720x710.jpg?width=1800\u0026amp;height=1775\u0026amp;name=HI97115_Positive-Locking-System_720x710.jpg 1800w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/product\/HI97115_Positive-Locking-System_720x710.jpg?width=2160\u0026amp;height=2130\u0026amp;name=HI97115_Positive-Locking-System_720x710.jpg 2160w\" alt=\"HI97115_Positive-Locking-System_720x710\" width=\"720\" height=\"710\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cell small-12 large-auto\" data-details=\"\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\" data-detail-item=\"\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003ch4\u003eAdvanced Optical System\u003c\/h4\u003e\n\u003cp\u003eA Light Emitting Diode (LED) provides more light while using less power and a narrow band interference filter results in more accurate and repeatable readings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\" data-detail-item=\"\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003ch4\u003eLarge Cuvette Size\u003c\/h4\u003e\n\u003cp\u003eThe 25-mm path length cuvette allows light to pass though more of the sample ensuring accurate measurements even in low-absorbance samples.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\" data-detail-item=\"\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003ch4\u003ePositive Locking System\u003c\/h4\u003e\n\u003cp\u003eCuvettes are placed into the holder in the same position every time by ensuring that the notch on the cap is positioned securely in the cell’s groove.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y\" data-detail-item=\"\"\u003e\n\u003cdiv class=\"cell small-12 large-auto\"\u003e\n\u003ch4\u003ePortable Design\u003c\/h4\u003e\n\u003cp\u003eMade to fit comfortably in your hand for on-the-go testing or sit on a table for benchtop use, a backlit LCD display provides at-a-glance readings from any angle, day or night. The supplied AA batteries provide life for more than 800 measurements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv data-content-region=\"product-description-split\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003csection class=\"banner--product-accordions\"\u003e\n\u003cdiv class=\"grid-container\"\u003e\n\u003cdiv class=\"grid-x grid-padding-x grid-padding-y align-center\"\u003e\n\u003cdiv class=\"cell small-12\"\u003e\n\u003cul class=\"accordion\" data-accordion=\"\" data-options=\"allowAllClosed: true; multiExpand: true;\"\u003e\n\u003cli class=\"accordion-item\" data-accordion-item=\"\"\u003eParameters\n\u003cdiv class=\"accordion-content is-open\" data-tab-content=\"\"\u003e\n\u003cdiv id=\"hs_cos_wrapper_widget_10855605870_\" class=\"hs_cos_wrapper hs_cos_wrapper_widget hs_cos_wrapper_type_inline_rich_text\" data-hs-cos-general-type=\"widget\" data-hs-cos-type=\"inline_rich_text\" data-hs-cos-field=\"content\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e \u003c\/th\u003e\n\u003cth\u003eRange\u003c\/th\u003e\n\u003cth\u003eResolution\u003c\/th\u003e\n\u003cth\u003eAccuracy at 25 °C (77 °F)\u003c\/th\u003e\n\u003cth\u003eLED\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH\u003c\/td\u003e\n\u003ctd\u003e6.3 to 8.6 pH\u003c\/td\u003e\n\u003ctd\u003e0.1 pH\u003c\/td\u003e\n\u003ctd\u003e±0.2 pH of reading\u003c\/td\u003e\n\u003ctd\u003e525 nm\u003c\/td\u003e\n\u003ctd\u003eColorimetric Adaptation of Phenol Red Method.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlkalinity\u003c\/td\u003e\n\u003ctd\u003e0.0 to 20.0 dKH\u003c\/td\u003e\n\u003ctd\u003e0.1 dKH\u003c\/td\u003e\n\u003ctd\u003e±0.3 dKH ±5 % of reading\u003c\/td\u003e\n\u003ctd\u003e610 nm\u003c\/td\u003e\n\u003ctd\u003eColorimetric Method. Reaction causes a distinctive range of colors from yellow to greenish blue to develop.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmmonia\u003c\/td\u003e\n\u003ctd\u003e0.00 to 2.50 ppm(as NH\u003csub\u003e\u003cspan\u003e \u003c\/span\u003e3\u003c\/sub\u003e\u003cspan\u003e \u003c\/span\u003e)\u003c\/td\u003e\n\u003ctd\u003e0.01 ppm\u003c\/td\u003e\n\u003ctd\u003e±0.05 ppm ±5% of reading\u003c\/td\u003e\n\u003ctd\u003e610 nm\u003c\/td\u003e\n\u003ctd\u003eAdaptation of the Salicylate Method. The Reaction between Ammonia and Ammonium and the reagent causes a blue‑green tint in the sample.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalcium\u003c\/td\u003e\n\u003ctd\u003e200 to 600 ppm\u003c\/td\u003e\n\u003ctd\u003e1 ppm\u003c\/td\u003e\n\u003ctd\u003e±6 % of reading\u003c\/td\u003e\n\u003ctd\u003e610 nm\u003c\/td\u003e\n\u003ctd\u003eAdaptation of Zincon Method.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium\u003c\/td\u003e\n\u003ctd\u003e1000 to 1800 ppm (as Mg\u003csup\u003e\u003cspan\u003e \u003c\/span\u003e2+\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003e)\u003c\/td\u003e\n\u003ctd\u003e5 ppm\u003c\/td\u003e\n\u003ctd\u003e±5 % of reading\u003c\/td\u003e\n\u003ctd\u003e610 nm\u003c\/td\u003e\n\u003ctd\u003eAdaptation of Colorimetric EDTA Method using calmagite indicator. Reaction between magnesium and the reagents causes a blue to violet tint in the sample.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrate LR\u003c\/td\u003e\n\u003ctd\u003e0.00 to 5.00 ppm(as NO\u003csub\u003e\u003cspan\u003e \u003c\/span\u003e3\u003c\/sub\u003e\u003cspan\u003e \u003c\/span\u003e\u003csup\u003e¯\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003e)\u003c\/td\u003e\n\u003ctd\u003e0.01 ppm\u003cbr\u003e±0.25 ppm\u003c\/td\u003e\n\u003ctd\u003e±2 % of reading\u003c\/td\u003e\n\u003ctd\u003e525 nm\u003c\/td\u003e\n\u003ctd\u003eZinc Reduction Method. Reaction between nitrate and the reagent causes a pink tint in the sample.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrate HR\u003c\/td\u003e\n\u003ctd\u003e0.0 to 75.0 ppm (as NO\u003csub\u003e\u003cspan\u003e \u003c\/span\u003e3\u003c\/sub\u003e\u003cspan\u003e \u003c\/span\u003e\u003csup\u003e¯\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003e)\u003c\/td\u003e\n\u003ctd\u003e0.1 ppm\u003c\/td\u003e\n\u003ctd\u003e±2.0 ppm\u003cbr\u003e±5 % of reading\u003c\/td\u003e\n\u003ctd\u003e525 nm\u003c\/td\u003e\n\u003ctd\u003eZinc Reduction Method. Reaction between nitrate and the reagent causes a pink tint in the sample.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrite ULR\u003c\/td\u003e\n\u003ctd\u003e0 to 200 ppb (as NO\u003cspan\u003e \u003c\/span\u003e\u003csub\u003e2\u003c\/sub\u003e\u003cspan\u003e \u003c\/span\u003e\u003csup\u003e-\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003e‑N)\u003c\/td\u003e\n\u003ctd\u003e1 ppb\u003c\/td\u003e\n\u003ctd\u003e±10 ppb\u003cbr\u003e±4 % of reading\u003c\/td\u003e\n\u003ctd\u003e525 nm\u003c\/td\u003e\n\u003ctd\u003eAdaptation of EPA Diazotization Method 354.1. Reaction between nitrite and the reagent causes a pink tint in the sample.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhosphate ULR\u003c\/td\u003e\n\u003ctd\u003e0.00 to 0.90 ppm\u003c\/td\u003e\n\u003ctd\u003e0.01 ppm\u003c\/td\u003e\n\u003ctd\u003e±0.02 ppm\u003cbr\u003e±5 % of reading\u003c\/td\u003e\n\u003ctd\u003e610 nm\u003c\/td\u003e\n\u003ctd\u003eAdaptation of Standard Methods for Examination of Water and Wastewater, 20th Edition, Ascorbic Acid Method. Reaction between phosphate and the reagent causes a blue tint in the sample.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSample cuvette (2 pcs.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSample cuvette cap (2 pcs.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarine pH reagent, 30 mL dropper (1 pc.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarine Alkalinity reagent, 30 mL (1 pc.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarine Ammonia starter kit - reagent A, 30 mL dropper (1 pc.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarine Ammonia starter kit - reagent B and C (reagent for 25 tests, each)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarine Calcium starter kit - reagent A, 30 mL (1 pc.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarine Calcium starter kit - reagent B starter kit (reagent for 25 tests)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarine Magnesium starter kit - reagent A, 120 mL bottle (1 pc.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium indicator reagent (for 25 tests)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarine Nitrate High Range starter kit (reagent for 25 tests)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarine Nitrite Ultra Low Range starter kit (reagent for 25 tests)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarine Phosphate Ultra Low Range starter kit (reagent for 25 tests)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 mL graduated syringe with tip (2 pcs.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinipipette with tip (1 pc.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3 mL Pasteur pipette (2 pcs.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.5V AA Alkaline batteries (3 pcs.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCloth for wiping cuvettes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScissors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstrument quality certificate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA quick reference guide with instructions for manual download\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003esku\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI97115-web\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlkalinity Marine Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.0 to 20.0 dKH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlkalinity Marine Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1 dKH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlkalinity Marine Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.3 dKH ±5% of reading at 25 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlkalinity Marine Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eColorimetric Method\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalcium Marine Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 to 600 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalcium Marine Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalcium Marine Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±6 % of reading at 25 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalcium Marine Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eadaptation of the Zincon Method\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnesium Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1000 to 1800 ppm (as Mg²+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnesium Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnesium Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±5% of reading at 25 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnesium Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAdaptation of the Colorimetric EDTA Method using calmagite indicator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003epH Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6.3 to 8.6 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003epH Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003epH Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.2 pH of reading at 25 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003epH Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eColorimetric adaptation of the Phenol Red Method\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":41767517585495,"sku":"HI97115C1","price":499.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/HI97115UC_In-Case_720x720-3__72980.1747744511.jpg?v=1763322704"},{"product_id":"hanna-hi731335n-cuvette-caps-replacement-4-pack","title":"Hanna Instruments Cuvette Caps HI731335N - Replacement Caps for HI731331 Glass Cuvettes (4-Pack)","description":"\u003cp\u003e\u003cstrong\u003eKeep your turbidity measurements secure and contamination-free\u003c\/strong\u003e with Hanna Instruments HI731335N replacement cuvette caps. These precision-threaded caps screw securely onto HI731331 glass cuvettes, protecting samples during testing and storage while preventing evaporation and contamination.\u003c\/p\u003e\n\n\u003ch4\u003eEssential Features:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure threaded design:\u003c\/strong\u003e Screws tightly onto HI731331 glass cuvettes for leak-proof sealing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSample protection:\u003c\/strong\u003e Prevents contamination, evaporation, and spillage during handling and storage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable construction:\u003c\/strong\u003e Long-lasting material withstands repeated use and cleaning\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValue pack:\u003c\/strong\u003e Includes 4 replacement caps for multiple cuvettes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfect fit:\u003c\/strong\u003e Designed specifically for HI731331 glass sample cuvettes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhy Replace Your Caps:\u003c\/h4\u003e\n\u003cp\u003eCuvette caps are essential for maintaining sample integrity during turbidity measurements. Worn, cracked, or missing caps can lead to sample contamination, evaporation, and inaccurate readings. Regular replacement ensures reliable measurements and extends the life of your glass cuvettes.\u003c\/p\u003e\n\n\u003ch4\u003eWide Instrument Compatibility:\u003c\/h4\u003e\n\u003cp\u003eCompatible with HI731331 glass cuvettes used in the following Hanna turbidity meters and photometers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHI83414 - Benchtop Turbidity Meter\u003c\/li\u003e\n\u003cli\u003eHI83749 - Multiparameter Photometer\u003c\/li\u003e\n\u003cli\u003eHI847492 - Turbidity Meter\u003c\/li\u003e\n\u003cli\u003eHI88703 - Portable Turbidity Meter\u003c\/li\u003e\n\u003cli\u003eHI88713 - Portable Turbidity Meter\u003c\/li\u003e\n\u003cli\u003eHI93414 - Portable Turbidity Meter\u003c\/li\u003e\n\u003cli\u003eHI98703 - Portable Turbidity Meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProfessional-Grade Quality:\u003c\/h4\u003e\n\u003cp\u003eManufactured in Romania by Hanna Instruments to exacting standards. Essential for laboratories, water treatment facilities, aquaculture operations, pool service professionals, and environmental testing applications where sample integrity is critical.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eUse with HI731331 glass cuvettes (sold separately). Keep spare caps on hand to ensure uninterrupted testing and maintain measurement accuracy.\u003c\/em\u003e\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":41790024745047,"sku":"HI731335N","price":22.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/caps-for-cuvettes-hi731335n__42711.1559321294.jpg?v=1751306064"},{"product_id":"hanna-hi731335-cuvette-caps-hi96-photometer-4-pack","title":"Hanna Instruments Cuvette Caps HI731335 - Replacement Caps for HI96 Series Photometers (4-Pack)","description":"\u003cp\u003e\u003cstrong\u003eEnsure measurement accuracy and consistency\u003c\/strong\u003e with Hanna Instruments HI731335 replacement cuvette caps. These precision-engineered caps feature a locking index tab and light-blocking design, essential for accurate photometric measurements with HI96 series portable photometers.\u003c\/p\u003e\n\n\u003ch4\u003ePrecision Features:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocking index tab:\u003c\/strong\u003e Ensures cuvette is inserted in the same position every time for consistent path length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight-blocking design:\u003c\/strong\u003e Prevents stray light from entering the optical system and interfering with measurements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure threaded fit:\u003c\/strong\u003e Screws tightly onto HI731331 glass cuvettes for leak-proof sealing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSample protection:\u003c\/strong\u003e Prevents contamination, evaporation, and spillage during handling and storage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValue 4-pack:\u003c\/strong\u003e Includes four replacement caps for multiple cuvettes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhy Proper Alignment Matters:\u003c\/h4\u003e\n\u003cp\u003eAccurate photometric analysis requires consistent cuvette positioning. According to the Beer-Lambert Law, absorbance depends on the optical path length (distance light travels through the sample). The HI731335's locking index tab ensures the cuvette is inserted in the same orientation for both blank measurements (zero) and sample readings, maintaining consistent path length and accurate results.\u003c\/p\u003e\n\n\u003ch4\u003eThe Beer-Lambert Law:\u003c\/h4\u003e\n\u003cp\u003eThe quantity of radiation absorbed is given by: \u003cstrong\u003eA = log I₀\/I\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAbsorbance is also expressed as: \u003cstrong\u003eA = ε • C • l\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhere:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA\u003c\/strong\u003e = Absorbance (dimensionless)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eε\u003c\/strong\u003e = Molar extinction coefficient [L\/(mol•cm)]\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eC\u003c\/strong\u003e = Concentration of the substance (mol\/L)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003el\u003c\/strong\u003e = Optical path length through sample (cm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConsistent cuvette positioning ensures the path length (l) remains constant, critical for accurate concentration measurements.\u003c\/p\u003e\n\n\u003ch4\u003eOptical System Protection:\u003c\/h4\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system-HI96series.png?width=335\u0026amp;name=photometer-optical-system-HI96series.png\" alt=\"Hanna HI96 series photometer optical system diagram showing light path\" width=\"335\" srcset=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system-HI96series.png?width=168\u0026amp;name=photometer-optical-system-HI96series.png 168w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system-HI96series.png?width=335\u0026amp;name=photometer-optical-system-HI96series.png 335w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system-HI96series.png?width=503\u0026amp;name=photometer-optical-system-HI96series.png 503w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system-HI96series.png?width=670\u0026amp;name=photometer-optical-system-HI96series.png 670w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system-HI96series.png?width=838\u0026amp;name=photometer-optical-system-HI96series.png 838w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system-HI96series.png?width=1005\u0026amp;name=photometer-optical-system-HI96series.png 1005w\" sizes=\"(max-width: 335px) 100vw, 335px\"\u003e\u003c\/p\u003e\n\n\u003ch4\u003eProfessional Applications:\u003c\/h4\u003e\n\u003cp\u003eEssential for laboratories, water treatment facilities, aquaculture operations, pool service professionals, and environmental testing applications where measurement accuracy and repeatability are critical. The HI731335 caps are the same high-quality components supplied with new HI96 series photometers.\u003c\/p\u003e\n\n\u003ch4\u003eTechnical Specifications:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e HI731335\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 4 caps per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e HI96 series portable photometers with HI731331 glass cuvettes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Locking index tab, light-blocking design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4 oz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Romania\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProfessional-Grade Quality:\u003c\/h4\u003e\n\u003cp\u003eManufactured by Hanna Instruments to exacting standards. Replace worn or missing caps to maintain measurement accuracy and protect your samples from contamination.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eUse with HI731331 glass cuvettes (sold separately). Keep spare caps on hand to ensure uninterrupted testing and maintain measurement integrity.\u003c\/em\u003e\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":41790034640983,"sku":"HI731335","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/hi731335__51089.1559321308.jpg?v=1751306804"},{"product_id":"hanna-marine-magnesium-checker-hc-hi783","title":"Hanna Marine Magnesium Checker HC - HI783","description":"\u003cp\u003eThe first Magnesium test of its kind for saltwater aquariums, our Marine Magnesium Checker® HC (HI783) is just what every reef tank owner needs. Struggling with test kits is now a thing of the past. Stop guessing or interpreting a color change by eye. Get a fast, accurate digital read-out every time. \u003c\/p\u003e\n\u003cp\u003ePerfect for testing and measuring Magnesium levels in saltwater aquariums, reef tanks, and other marine and aquaculture applications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEasy-to-read, instant digital results\u003c\/li\u003e\n\u003cli\u003eSmall, convenient portable size\u003c\/li\u003e\n\u003cli\u003eUser-friendly, simple directions and steps \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"HI783-liz-banne4r\" src=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/HI783-liz-banne4r.jpg?width=2300\u0026amp;height=746\u0026amp;name=HI783-liz-banne4r.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eFeatures \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSaltwater compatible\u003c\/li\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003cli\u003eRange: 1000 to 1800 ppm Magnesium\u003c\/li\u003e\n\u003cli\u003eDetermines the concentration of Magnesium calorimetrically using the Beer-Lambert Principle\u003c\/li\u003e\n\u003cli\u003eOne-button operation\u003c\/li\u003e\n\u003cli\u003eA great alternative to chemical test kits\u003c\/li\u003e\n\u003cli\u003eColor-coded syringes for hassle-free testing\u003c\/li\u003e\n\u003cli\u003eAuto shut-off conserves battery energy\u003c\/li\u003e\n\u003cli\u003eLarge LCD screen with digital read-out\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIncluded\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarine Magnesium Checker (HI783) supplied with protective case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReagent set for 25 Magnesium tests (HI783-25)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass cuvette and cap (2 pcs.) (HI731315)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5 mL syringe with tip and black printing (1 pc.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5 mL syringe with tip and blue printing (1 pc.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.5V AAA Alkaline battery (1 pc.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstruction manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eQuick reference guide\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI783\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1000 to 1800 ppm Magnesium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy @ 25°C (77°F)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±5% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Source\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLight Emitting Diode @ 610 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Detector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSilicon photocell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMethod\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAdaptation of the colorimetric EDTA method using calmagite indicator. The reaction between magnesium and the reagents causes a blue to violet tint in the sample.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5V AAA Alkaline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto shut-off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAfter 10 minutes of non-use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 50 °C (32 to 122 °F) max. 95% RH non-condensing. Prepared sample cuvette (sample plus reagents) must be 22 to 28 °C (72 to 82 °F).*Warm or cool prepared cuvettes if needed.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e64 g (2.3 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReagent Set\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI783-25 (25 tests)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration Check\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI783-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":41802025992279,"sku":"HI783","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/HI783-CheckerHC-Front-1200x1200-bae16f96-4a43-42ac-b285-c144c15b6f5a__32265.jpg?v=1751993636"},{"product_id":"hanna-marine-ph-checker-hc-hi780","title":"Hanna Marine pH Checker HC - HI780","description":"\u003cp\u003e\u003cspan\u003eEnhance your marine aquarium's health and stability with the Hanna Marine pH Checker HC - HI780. This accurate and easy-to-use pH checker is designed specifically for saltwater aquariums, helping you maintain the perfect pH balance for your fish and corals. With its durable construction and simple calibration process, this pH checker is a must-have tool for any serious marine aquarist.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eFeatures at-a-glance:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFor use with saltwater samples\u003c\/li\u003e\n\u003cli\u003eEasier to use and more accurate than chemical test kits\u003c\/li\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003cli\u003eSmall size, big convenience\u003c\/li\u003e\n\u003cli\u003eIdeal for aquariums and marine biology applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI780\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6.3 to 8.6 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy @ 25°C (77°F)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.2 pH of reading @ 25 °C (77 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Source\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED @ 525 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Detector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003esilicon photocell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMethod\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eColorimetric Adaptation of Phenol Red Method\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) 1.5V AAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto shut-off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eafter ten minutes of non-use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C (32 to 122°F) RH max 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e64 g (2.3 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrdering Information\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEach HI780 is delivered in a case with custom insert and is supplied with sample cuvette and cap (2 pcs.), Marine pH reagent starter kit, 1.5V AAA Alkaline battery (1 pc.), \u0026amp; Instruction manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReagent Set\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI780-25 (100 tests)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration Check\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI780-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":41802042441815,"sku":"HI780","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/HI780_Front-1200x1200__00810.jpg?v=1751995160"},{"product_id":"hanna-hi731315-glass-cuvettes-checker-hc-replacement","title":"Hanna HI731315 Glass Cuvettes for Checker HC - Replacement Set of 2 with Caps","description":"\u003cp\u003eThe HI731315 are spare glass cuvettes and plastic caps used with the HI7XX Checker® HC colorimeters. Each cuvette has a 10 ml level mark to measure the appropriate volume. The HI731315 includes 2 cuvettes and 2 caps.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e10 ml level mark for adding correct volume.\u003c\/li\u003e\n\u003cli\u003eTest more samples and average your results for the best accuracy.\u003c\/li\u003e\n\u003cli\u003ePerfect for replacing scratched or discolored cuvettes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eWhen using a colorimeter or photometer it is important to use clean cuvettes that are free from scratches. Any discoloration or scratches will interfere with any optically based measurement. The HI731315 are the replacement glass cuvettes that are supplied with the \u003c\/span\u003eChecker\u003csup\u003e®\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eHC colorimeters\u003cspan\u003e. If you need extra cuvettes to test more samples or are looking to replace the cuvettes that came with your Checker, this set comes with two cuvettes with caps.\u003c\/span\u003e\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":41802062397527,"sku":"HI731315","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/Cuevetts__59360.1570475695.jpg?v=1751996355"},{"product_id":"hanna-hi736-phosphorus-checker-ultra-low-range-marine","title":"Hanna HI736 Phosphorus Checker | Ultra Low Range Marine Colorimeter 0-200 ppb","description":"\u003cp\u003eGet accurate results for your saltwater aquarium with our simple handheld colorimeter. Our ultra low range phosphorus colorimeter brings you more precise technology from your typical chemical test kit. Standard test kits have limited accuracy since they rely on the user to match colors. Our handheld colorimeter makes your life easier by eliminating color matching and providing you a direct saltwater phosphorus result.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTake our portable handheld colorimeter anywhere.\u003c\/li\u003e\n\u003cli\u003eSimple, one-button design makes getting your results easy.\u003c\/li\u003e\n\u003cli\u003eImprove your technology and upgrade from your standard test kit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe HI736 Checker® HC (Handheld Colorimeter) provides a simple, accurate and cost-effective way to measure phosphorus in marine systems including reef tanks. Phosphorus is an important parameter to measure in aquaculture and aquariums; levels that are too high can lead to extensive algae growth, depleted dissolved oxygen levels, and ultimately can be fatal to many types of fish and aquatic life. Designed as a more accurate alternative to chemical test kits, the HI736 provides quick, accurate results in a few easy steps.\u003c\/p\u003e\n\u003ch4\u003eFeatures at-a-glance:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEasier to use and more accurate than chemical test kits\u003c\/li\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003cli\u003eSmall size, big convenience\u003c\/li\u003e\n\u003cli\u003eIdeal for: Aquariums, Environmental, Aquaculture, Water Quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI736\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 200 ppb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 ppb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy @ 25°C (77°F)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±5 ppb ±5% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Source\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED @ 525 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Detector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003esilicon photocell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMethod\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eadaptation of the Ascorbic Acid method\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) 1.5V AAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto shut-off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eafter two minutes of non-use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C (32 to 122°F) RH max 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e64 g (2.3 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrdering Information\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI736 Checker®HC is supplied with sample cuvettes with caps (2), marine phosphorus ULR reagent starter kit (reagents for 6 tests), battery, instructions and quick start guide.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReagent Set\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI736-25 (25 tests)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration Check\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI736-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":41817313837143,"sku":"HI736","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/HI736-CheckerHC-Front-1275x1275__45080.jpg?v=1752627827"},{"product_id":"hanna-saltwater-aquarium-alkalinity-colorimeter-ppm-checker-hc","title":"Hanna HI755 Saltwater Alkalinity Colorimeter - 0-300 ppm for Reef Aquariums","description":"\u003ch2\u003eProfessional Saltwater Alkalinity Colorimeter for Reef \u0026amp; Marine Aquariums\u003c\/h2\u003e\u003cp\u003eThe Hanna HI755 Checker HC is a portable, professional-grade saltwater alkalinity colorimeter designed for accurate alkalinity measurement from 0 to 300 ppm (mg\/L) CaCO₃ in reef aquariums, marine tanks, and saltwater aquaculture. This handheld photometer delivers lab-quality results with simple operation—just add reagent, insert the cuvette, and read alkalinity on the easy-to-read LCD display. Essential for maintaining optimal coral health and reef tank stability.\u003c\/p\u003e\u003ch3\u003eKey Features:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine Alkalinity Testing:\u003c\/strong\u003e Measures alkalinity from 0 to 300 ppm (mg\/L) CaCO₃ with ±5 ppm accuracy—ideal for reef tanks, SPS\/LPS coral systems, and saltwater aquariums\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable \u0026amp; Handheld:\u003c\/strong\u003e Compact Checker HC design fits in your pocket for testing anywhere—perfect for aquarium maintenance and water changes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLab-Quality Results:\u003c\/strong\u003e Advanced photometric technology delivers accurate, repeatable measurements comparable to expensive benchtop instruments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Operation:\u003c\/strong\u003e Easy three-step process—fill cuvette, add reagent, read result—no complex titrations or color matching\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD Display:\u003c\/strong\u003e Large, easy-to-read screen shows alkalinity in ppm (mg\/L) CaCO₃\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto-Off Function:\u003c\/strong\u003e Conserves battery life with automatic shutdown after 10 minutes of non-use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAL Check:\u003c\/strong\u003e Built-in validation feature verifies meter performance for quality assurance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Includes meter, sample cuvettes, reagents for initial testing, and rigid carrying case\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModel: HI755\u003c\/li\u003e\n\u003cli\u003eParameter: Alkalinity (as CaCO₃)\u003c\/li\u003e\n\u003cli\u003eRange: 0 to 300 ppm (mg\/L)\u003c\/li\u003e\n\u003cli\u003eResolution: 1 ppm\u003c\/li\u003e\n\u003cli\u003eAccuracy: ±5 ppm ±5% of reading @ 25°C\u003c\/li\u003e\n\u003cli\u003eMethod: Colorimetric method\u003c\/li\u003e\n\u003cli\u003eLight Source: LED @ 466 nm\u003c\/li\u003e\n\u003cli\u003eLight Detector: Silicon photocell\u003c\/li\u003e\n\u003cli\u003eBattery: 1 x 1.5V AAA (included)\u003c\/li\u003e\n\u003cli\u003eAuto-Off: After 10 minutes of non-use\u003c\/li\u003e\n\u003cli\u003eDimensions: 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5 inches)\u003c\/li\u003e\n\u003cli\u003eWeight: 1 lb\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: Romania\u003c\/li\u003e\n\u003cli\u003eSKU: HI755\u003c\/li\u003e\n\u003cli\u003eBarcode: 765105746207\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications:\u003c\/h3\u003e\u003cp\u003eEssential for reef aquarium alkalinity monitoring (SPS coral, LPS coral, soft coral tanks), marine aquarium water quality management, saltwater aquaculture, coral propagation systems, reef tank maintenance, water change verification, and any saltwater application requiring precise alkalinity measurement. Perfect for reef hobbyists maintaining optimal coral growth conditions, marine aquarium professionals, and coral farmers.\u003c\/p\u003e\u003ch3\u003eWhat's Included:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHI755 Alkalinity Checker HC\u003c\/li\u003e\n\u003cli\u003eSample cuvettes with caps (2)\u003c\/li\u003e\n\u003cli\u003eAlkalinity reagents for initial testing\u003c\/li\u003e\n\u003cli\u003e1.5V AAA battery\u003c\/li\u003e\n\u003cli\u003eInstruction manual\u003c\/li\u003e\n\u003cli\u003eInstrument quality certificate\u003c\/li\u003e\n\u003cli\u003eRigid carrying case\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Test Alkalinity in Reef Tanks?\u003c\/h3\u003e\u003cp\u003eAlkalinity (carbonate hardness\/KH) is one of the most critical parameters in reef aquariums. It provides the buffering capacity that stabilizes pH and supplies carbonate ions essential for coral skeleton formation and calcification. Optimal alkalinity levels (typically 7-11 dKH or 125-200 ppm) ensure healthy coral growth, vibrant colors, and stable water chemistry. Low alkalinity causes pH swings and stunted coral growth, while high alkalinity can lead to precipitation and tissue damage. The HI755's 0-300 ppm range covers the full spectrum of reef tank alkalinity levels for precise monitoring.\u003c\/p\u003e\u003ch3\u003eHow to Use:\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eFill cuvette with 10 mL saltwater sample to line\u003c\/li\u003e\n\u003cli\u003eAdd HI755 reagent packet and mix thoroughly\u003c\/li\u003e\n\u003cli\u003eWait for color development (1 minute)\u003c\/li\u003e\n\u003cli\u003eInsert cuvette into HI755 Checker HC\u003c\/li\u003e\n\u003cli\u003ePress button to read alkalinity in ppm (mg\/L) CaCO₃\u003c\/li\u003e\n\u003cli\u003eConvert to dKH if desired: dKH = ppm ÷ 17.9\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eReagent Availability:\u003c\/h3\u003e\u003cp\u003eReplacement reagents available separately as HI755-26 (25 tests). Each reagent packet is pre-measured for consistent, accurate results.\u003c\/p\u003e\u003ch3\u003eMaintenance \u0026amp; Care:\u003c\/h3\u003e\u003cp\u003eRinse cuvettes with RO\/DI water after each use to prevent salt buildup. Store in protective case when not in use. Replace battery when low battery indicator appears. Use CAL Check feature periodically to verify meter performance. Keep reagents stored in a cool, dry place away from moisture.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eNote: Reagents sold separately after initial supply is used. For best results, use fresh reagents and follow all testing procedures carefully. Regular CAL Check validation recommended for quality assurance. Results in ppm can be converted to dKH (degrees of carbonate hardness) by dividing by 17.9.\u003c\/em\u003e\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":41817313968215,"sku":"HI755","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/HI755-CheckerHC_Front-1275x1275__68678.jpg?v=1752628266"},{"product_id":"hanna-instruments-freshwater-alkalinity-colorimeter","title":"Hanna Instruments Freshwater Alkalinity Colorimeter","description":"\u003cp\u003eStop wasting time struggling with a color chart. Get accurate water testing results with our simple handheld colorimeter.  Our freshwater alkalinity colorimeter brings you more precise technology from your standard chemical test kit. With direct digital freshwater alkalinity results our handheld colorimeter eliminates the hassle of color matching.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe small size of our handheld colorimeter makes it portable and fit perfectly in your pocket..\u003c\/li\u003e\n\u003cli\u003eResults are achieved easily with simple, one-button operation.\u003c\/li\u003e\n\u003cli\u003eEasy operation and direct results make measurement quick.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe HI775 Checker\u003csup\u003e®\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eHC (Handheld Colorimeter) provides a simple, accurate and cost-effective way to measure alkalinity. Present in varying concentrations in freshwater bodies, alkalinity, from carbonate and noncarbonate salts, provides a buffer against drastic pH changes in water. Used in the drinking water treatment process, the concentration of alkalinity dictates which chemicals are used and at what volumes, as well as protecting finished, potable drinking water in the distribution system. Designed as a more accurate alternative to chemical test kits, the HI775 provides quick, accurate results in a few easy steps.\u003c\/p\u003e\n\u003ch4\u003eFeatures at-a-glance:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEasier to use and more accurate than chemical test kits\u003c\/li\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003cli\u003eSmall size, big convenience\u003c\/li\u003e\n\u003cli\u003eIdeal for: Water Quality, Environmental, Education, Industrial\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI775\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 500 ppm CaCO₃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy @ 25°C (77°F)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±5 ppm ±5% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Source\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED @ 610 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Detector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003esilicon photocell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMethod\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ecolorimetric method. The reaction causes a distinctive range of colors from yellow to green to blue to develop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) 1.5V AAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto shut-off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eafter ten minutes of non-use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C (32 to 122°F) RH max 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e64 g (2.3 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrdering Information\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI775 Checker®HC is supplied with sample cuvettes with caps (2), alkalinity reagent starter kit (reagents for 25 tests), syringe with tip, battery, instructions and quick start guide.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReagent Set\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI775-26 (25 tests)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration Check\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI775-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":41817395691607,"sku":"HI775","price":74.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/hi775-checkerhc-front-_1___12662.jpg?v=1752634026"},{"product_id":"hanna-hi713-phosphate-checker-low-range-colorimeter","title":"Hanna HI713 Phosphate Checker | Low Range Colorimeter | 0-2.5 mg\/L","description":"\u003ch2\u003eProfessional Low Range Phosphate Colorimeter for Aquariums, Pools \u0026amp; Freshwater Testing\u003c\/h2\u003e\u003cp\u003eThe Hanna HI713 Checker HC is a portable, professional-grade low range phosphate colorimeter designed for accurate phosphate (PO₄³⁻) measurement from 0.00 to 2.50 mg\/L in aquariums, swimming pools, freshwater, and water quality applications. This handheld photometer delivers lab-quality results in the field with simple operation—just add reagent, insert the cuvette, and read phosphate concentration on the easy-to-read LCD display.\u003c\/p\u003e\u003ch3\u003eKey Features:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Range Precision:\u003c\/strong\u003e Measures phosphate from 0.00 to 2.50 mg\/L (ppm) PO₄³⁻ with ±0.04 mg\/L accuracy—ideal for aquariums, pools, and low-phosphate applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable \u0026amp; Handheld:\u003c\/strong\u003e Compact Checker HC design fits in your pocket for on-site testing anywhere\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLab-Quality Results:\u003c\/strong\u003e Advanced photometric technology delivers accurate, repeatable measurements comparable to benchtop instruments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Operation:\u003c\/strong\u003e Easy three-step process—fill cuvette, add reagent, read result—no complex procedures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD Display:\u003c\/strong\u003e Large, easy-to-read screen shows phosphate concentration in mg\/L (ppm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto-Off Function:\u003c\/strong\u003e Conserves battery life with automatic shutdown after 10 minutes of non-use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAL Check:\u003c\/strong\u003e Built-in validation feature verifies meter performance for quality assurance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Includes meter, sample cuvettes, reagents for initial testing, and carrying case\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModel: HI713\u003c\/li\u003e\n\u003cli\u003eParameter: Phosphate (PO₄³⁻)\u003c\/li\u003e\n\u003cli\u003eRange: 0.00 to 2.50 mg\/L (ppm)\u003c\/li\u003e\n\u003cli\u003eResolution: 0.01 mg\/L\u003c\/li\u003e\n\u003cli\u003eAccuracy: ±0.04 mg\/L ±4% of reading @ 25°C\u003c\/li\u003e\n\u003cli\u003eMethod: Adaptation of ascorbic acid method\u003c\/li\u003e\n\u003cli\u003eLight Source: LED @ 525 nm\u003c\/li\u003e\n\u003cli\u003eLight Detector: Silicon photocell\u003c\/li\u003e\n\u003cli\u003eBattery: 1 x 1.5V AAA (included)\u003c\/li\u003e\n\u003cli\u003eAuto-Off: After 10 minutes of non-use\u003c\/li\u003e\n\u003cli\u003eDimensions: 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5 inches)\u003c\/li\u003e\n\u003cli\u003eWeight: 1 lb\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: Romania\u003c\/li\u003e\n\u003cli\u003eSKU: HI713\u003c\/li\u003e\n\u003cli\u003eBarcode: 765105745859\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications:\u003c\/h3\u003e\u003cp\u003eEssential for aquarium phosphate monitoring (algae control, plant health), swimming pool water quality (algae prevention, water clarity), freshwater testing, drinking water quality verification, environmental water testing, laboratory analysis, and any application requiring accurate low-range phosphate measurement. Perfect for aquarium hobbyists, pool service professionals, water treatment operators, and environmental consultants.\u003c\/p\u003e\u003ch3\u003eWhat's Included:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHI713 Phosphate Low Range Checker HC\u003c\/li\u003e\n\u003cli\u003eSample cuvettes with caps (2)\u003c\/li\u003e\n\u003cli\u003ePhosphate Low Range reagents for initial testing\u003c\/li\u003e\n\u003cli\u003e1.5V AAA battery\u003c\/li\u003e\n\u003cli\u003eInstruction manual\u003c\/li\u003e\n\u003cli\u003eInstrument quality certificate\u003c\/li\u003e\n\u003cli\u003eRigid carrying case\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Test Phosphate Levels?\u003c\/h3\u003e\u003cp\u003ePhosphate testing is critical for preventing algae growth and maintaining water quality. In aquariums, excess phosphates promote nuisance algae growth that competes with plants and corals—optimal levels are typically below 0.05 mg\/L for planted tanks and near zero for reef tanks. In swimming pools, phosphates are nutrients that fuel algae blooms—even with proper chlorine levels, high phosphates (above 100-200 ppb or 0.1-0.2 mg\/L) can cause persistent algae problems and cloudy water. The HI713's low range (0-2.5 mg\/L) is perfectly suited for these applications where phosphate levels should be minimal.\u003c\/p\u003e\u003ch3\u003eHow to Use:\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eFill cuvette with 10 mL water sample to line\u003c\/li\u003e\n\u003cli\u003eAdd HI713 reagent packet and mix thoroughly\u003c\/li\u003e\n\u003cli\u003eWait for color development (2 minutes)\u003c\/li\u003e\n\u003cli\u003eInsert cuvette into HI713 Checker HC\u003c\/li\u003e\n\u003cli\u003ePress button to read phosphate concentration in mg\/L\u003c\/li\u003e\n\u003cli\u003eConvert to ppb if desired: ppb = mg\/L × 1000\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eReagent Availability:\u003c\/h3\u003e\u003cp\u003eReplacement reagents available separately as HI713-25 (25 tests) and HI713-100 (100 tests). Each reagent packet is pre-measured for consistent, accurate results.\u003c\/p\u003e\u003ch3\u003eMaintenance \u0026amp; Care:\u003c\/h3\u003e\u003cp\u003eClean cuvettes with distilled water after each use. Store in protective case when not in use. Replace battery when low battery indicator appears. Use CAL Check feature periodically to verify meter performance. Keep reagents stored in a cool, dry place.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eNote: Reagents sold separately after initial supply is used. For best results, use fresh reagents and follow all testing procedures carefully. Regular CAL Check validation recommended for quality assurance.\u003c\/em\u003e\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":41918545330263,"sku":"HI713","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/HI713-CheckerHC-Front-1275x1275__53140.jpg?v=1773865002"},{"product_id":"hanna-hi781-marine-nitrate-low-range-colorimeter-reef-aquarium","title":"Hanna Instruments HI781 Marine Nitrate Low Range Colorimeter for Reef \u0026 Saltwater Aquariums","description":"\u003ch2\u003eHanna Instruments HI781 Marine Nitrate Low Range Colorimeter\u003c\/h2\u003e\u003cp\u003eProtect your reef and saltwater aquarium with pinpoint nitrate accuracy. The \u003cstrong\u003eHanna Instruments HI781 Checker® HC\u003c\/strong\u003e is a handheld colorimeter engineered to measure low-range nitrate levels from \u003cstrong\u003e0.00 to 5.00 ppm (as NO3–)\u003c\/strong\u003e — far more reliably than color-matching test kits. No more squinting at color charts; get a clear digital readout every time.\u003c\/p\u003e\u003ch3\u003eWhy Nitrate Control Matters in Reef Aquariums\u003c\/h3\u003e\u003cp\u003eNitrate is a natural by-product of the nitrogen cycle. Too much promotes algae blooms and dinoflagellate outbreaks; too little starves SPS corals, causing color loss and tissue recession. The HI781 gives you the precise data you need to keep your reef thriving.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement range:\u003c\/strong\u003e 0.00–5.00 ppm NO3– (extend to 0–50 ppm with the approved dilution procedure).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital readout\u003c\/strong\u003e — eliminates visual color-matching errors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in timer\u003c\/strong\u003e — guides you through each step so you never miss a reaction window.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSaltwater-optimized\u003c\/strong\u003e — calibrated specifically for marine and reef aquarium water chemistry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMore accurate than test kits\u003c\/strong\u003e — uses the Beer-Lambert colorimetric principle for lab-grade results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-parameter dedicated\u003c\/strong\u003e — no cross-interference from other parameters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; portable\u003c\/strong\u003e — handheld design fits easily in your aquarium toolkit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal for:\u003c\/strong\u003e reef aquariums, marine biology, and professional saltwater applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow It Works\u003c\/h3\u003e\u003cp\u003eAdd the pre-measured HI781-25 reagent packet to your water sample. The HI781 uses the Beer-Lambert principle to detect the pink\/violet color change caused by the nitrate-reagent reaction and converts it to a precise ppm reading — in minutes.\u003c\/p\u003e\u003ch3\u003eIn the Box\u003c\/h3\u003e\u003cp\u003eHI781 Checker® HC colorimeter, sample cuvettes, HI781-25 reagent sachets (starter supply), instructions. Replacement reagents sold separately as \u003cstrong\u003eHI781-25 (25 tests)\u003c\/strong\u003e.\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":41991258538071,"sku":"HI781","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/HI781-Front__67689.jpg?v=1758677062"},{"product_id":"hanna-instruments-marine-phosphate-ultra-low-range-colorimeter-checker-hc-hi774","title":"Hanna Instruments Marine Phosphate Ultra Low Range Colorimeter - Checker HC - HI774","description":"\u003cp\u003eThe HI774 Ultra Low Range Phosphate Checker® HC (Handheld Colorimeter) is a cost-effective way to measure phosphate in marine systems, including reef tanks. Testing for phosphates is standard practice for saltwater aquariums and provides valuable insight into your reef tank's water chemistry to help ensure long-term coral health. Phosphates are one of the many forms of phosphorus compounds found in marine waters. Excessive phosphate levels can prevent calcification, skeletal formation, and growth of many coral species, particularly those referred to as SPS or small-polyp stony. In addition, high phosphate levels can cause nuisance algae growth in your reef tank. This can become problematic because algae often outcompetes sessile organisms for light, nutrients, and space, jeopardizing long term coral health in your reef.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTake our portable handheld colorimeter anywhere.\u003c\/li\u003e\n\u003cli\u003eSimple, one-button design makes getting your results easy.\u003c\/li\u003e\n\u003cli\u003eImprove your technology and upgrade from your standard test kit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe HI774 Checker\u003csup\u003e®\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eHC (Handheld Colorimeter) provides a simple, accurate and cost effective way to measure phosphate from 0.00 to 0.90 ppm. Phosphorus is an important parameter to measure in aquaculture and aquariums; levels that are too high can lead to extensive algae growth, depleted dissolved oxygen levels, and ultimately can be fatal to many types of fish and aquatic life. Designed as a more accurate alternative to chemical test kits, the HI774 provides quick, accurate results in a few easy steps.\u003c\/p\u003e\n\u003ch4\u003eFeatures at-a-glance:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEasier to use and more accurate than chemical test kits\u003c\/li\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003cli\u003eSmall size, big convenience\u003c\/li\u003e\n\u003cli\u003eIdeal for: Aquariums, Environmental, Aquaculture, Water Quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI774\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.00 to 0.90 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.01 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy @ 25°C (77°F)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.02 ppm ±5% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Source\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED @ 525 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Detector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003esilicon photocell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMethod\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eadaptation of the Standard Methods for the Examination of Water and Wastewater, 20th edition, Ascorbic-Acid method\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) 1.5V AAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto shut-off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eafter 7 minutes of non-use and 2 minutes after reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C (32 to 122°F) RH max 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e64 g (2.3 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrdering Information\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI774 Checker®HC is supplied with (2) sample cuvettes with caps, phosphate ULR reagent starter kit for 10 tests, batteries, instructions, and quick start guide.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReagent Set\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI774-25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration Check\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI774-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":42059298242647,"sku":"HI774","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/HI774_Front-1200x1200__99630.jpg?v=1761601088"},{"product_id":"hanna-hi97771c-chlorine-photometer-ultra-high-range-0-10-ppm","title":"Hanna HI97771C Free \u0026 Total Chlorine Photometer - Ultra High Range 0-10 ppm","description":"\u003ch2\u003eHanna HI97771C Free \u0026amp; Total Chlorine Photometer Kit – Ultra High Range Precision\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eHanna HI97771C Free and Total Chlorine Portable Photometer Kit\u003c\/strong\u003e is a professional-grade colorimeter designed for ultra-high range chlorine measurement from \u003cstrong\u003e0 to 10 ppm\u003c\/strong\u003e. This complete kit measures both free and total chlorine with lab-grade accuracy, making it ideal for high-chlorine applications in pools, spas, water treatment facilities, and industrial water quality management.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-high range 0-10 ppm\u003c\/strong\u003e – measures elevated chlorine levels in shock treatments and industrial applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual parameter measurement\u003c\/strong\u003e – tests both free chlorine and total chlorine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable photometer design\u003c\/strong\u003e – compact, battery-powered for field and lab use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete kit\u003c\/strong\u003e – includes photometer, reagents, cuvettes, and carrying case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLab-grade accuracy\u003c\/strong\u003e – precise colorimetric measurement for critical water quality applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple operation\u003c\/strong\u003e – easy-to-use interface with clear digital display\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast results\u003c\/strong\u003e – quick readings for efficient testing workflows\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003ePerfect for pool shock treatment monitoring, spa sanitation verification, municipal water treatment, industrial wastewater chlorination, food \u0026amp; beverage processing, and laboratory high-chlorine analysis. Whether you're a pool service professional, water treatment operator, or industrial QC technician, the HI97771C delivers the ultra-high range precision you need for confident chlorine measurement.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModel: HI97771C\u003c\/li\u003e\n\u003cli\u003eParameters: Free Chlorine \u0026amp; Total Chlorine\u003c\/li\u003e\n\u003cli\u003eRange: 0-10 ppm (ultra-high range)\u003c\/li\u003e\n\u003cli\u003eProduct Type: Portable Photometer Kit\u003c\/li\u003e\n\u003cli\u003eDisplay: Digital LCD\u003c\/li\u003e\n\u003cli\u003ePower: Battery operated\u003c\/li\u003e\n\u003cli\u003eWeight: 3.5 lbs\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: Romania\u003c\/li\u003e\n\u003cli\u003eSKU: HI97771C\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHI97771C Portable Photometer\u003c\/li\u003e\n\u003cli\u003eFree Chlorine Reagents\u003c\/li\u003e\n\u003cli\u003eTotal Chlorine Reagents\u003c\/li\u003e\n\u003cli\u003eGlass Cuvettes\u003c\/li\u003e\n\u003cli\u003eCarrying Case\u003c\/li\u003e\n\u003cli\u003eInstruction Manual\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTrust Hanna Instruments for durable, accurate water testing solutions that meet the demands of professionals in pool maintenance, water treatment, industrial quality control, and laboratory analysis.\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":42075073380439,"sku":"HI97771C","price":599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/case-hi96771__07465.jpg?v=1762205489"},{"product_id":"hanna-hi707-nitrite-checker-low-range-colorimeter","title":"Hanna HI707 Nitrite Checker | Low Range Digital Colorimeter 0-0.35 mg\/L","description":"\u003ch2\u003eProfessional Low Range Nitrite Colorimeter for Aquariums, Pools \u0026amp; Drinking Water\u003c\/h2\u003e\n\u003cp\u003eThe Hanna HI707 Checker HC is a portable, professional-grade low range nitrite colorimeter designed for accurate nitrite (NO₂⁻-N) measurement from 0.00 to 0.35 mg\/L in aquariums, swimming pools, drinking water, and water quality applications. This handheld photometer delivers lab-quality results in the field with simple operation—just add reagent, insert the cuvette, and read nitrite concentration on the easy-to-read LCD display. Essential for monitoring the nitrogen cycle in aquariums and ensuring safe water quality.\u003c\/p\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Range Precision:\u003c\/strong\u003e Measures nitrite from 0.00 to 0.35 mg\/L (ppm) NO₂⁻-N with ±0.02 mg\/L accuracy—ideal for aquariums, pools, and drinking water applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable \u0026amp; Handheld:\u003c\/strong\u003e Compact Checker HC design fits in your pocket for on-site testing anywhere\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLab-Quality Results:\u003c\/strong\u003e Advanced photometric technology delivers accurate, repeatable measurements comparable to benchtop instruments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Operation:\u003c\/strong\u003e Easy three-step process—fill cuvette, add reagent, read result—no complex procedures or color matching\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD Display:\u003c\/strong\u003e Large, easy-to-read screen shows nitrite concentration in mg\/L (ppm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto-Off Function:\u003c\/strong\u003e Conserves battery life with automatic shutdown after 10 minutes of non-use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAL Check:\u003c\/strong\u003e Built-in validation feature verifies meter performance for quality assurance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Includes meter, sample cuvettes, reagents for initial testing, and carrying case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: HI707\u003c\/li\u003e\n\u003cli\u003eParameter: Nitrite (NO₂⁻-N)\u003c\/li\u003e\n\u003cli\u003eRange: 0.00 to 0.35 mg\/L (ppm)\u003c\/li\u003e\n\u003cli\u003eResolution: 0.01 mg\/L\u003c\/li\u003e\n\u003cli\u003eAccuracy: ±0.02 mg\/L ±4% of reading @ 25°C\u003c\/li\u003e\n\u003cli\u003eMethod: Adaptation of EPA Diazotization method 354.1\u003c\/li\u003e\n\u003cli\u003eLight Source: LED @ 525 nm\u003c\/li\u003e\n\u003cli\u003eLight Detector: Silicon photocell\u003c\/li\u003e\n\u003cli\u003eBattery: 1 x 1.5V AAA (included)\u003c\/li\u003e\n\u003cli\u003eAuto-Off: After 10 minutes of non-use\u003c\/li\u003e\n\u003cli\u003eDimensions: 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5 inches)\u003c\/li\u003e\n\u003cli\u003eWeight: 1 lb\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: Romania\u003c\/li\u003e\n\u003cli\u003eSKU: HI707\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications:\u003c\/h3\u003e\n\u003cp\u003eEssential for aquarium nitrogen cycle monitoring (new tank cycling, fish health), freshwater and saltwater aquarium testing, pond water quality management, swimming pool and spa water chemistry, drinking water quality testing (EPA compliance), wastewater treatment monitoring, environmental water testing, laboratory analysis, and any application requiring accurate low-range nitrite measurement. Perfect for aquarium hobbyists cycling new tanks, pond owners, pool service professionals, and water quality specialists.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHI707 Nitrite Low Range Checker HC\u003c\/li\u003e\n\u003cli\u003eSample cuvettes with caps (2)\u003c\/li\u003e\n\u003cli\u003eNitrite Low Range reagents for initial testing (\u003cspan\u003enitrite LR reagent starter kit (reagents for 5 tests)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e1.5V AAA battery\u003c\/li\u003e\n\u003cli\u003eInstruction manual\u003c\/li\u003e\n\u003cli\u003eInstrument quality certificate\u003c\/li\u003e\n\u003cli\u003eRigid carrying case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Test Nitrite Levels?\u003c\/h3\u003e\n\u003cp\u003eNitrite testing is critical for aquarium health and water safety. In aquariums, nitrite is a toxic intermediate product in the nitrogen cycle—produced when beneficial bacteria convert ammonia (from fish waste) into nitrite, which is then converted to less toxic nitrate. Even low nitrite levels (above 0.5 ppm) are toxic to fish, causing brown blood disease and stress. During new tank cycling, nitrite levels spike before beneficial bacteria populations establish. In drinking water, the EPA maximum contaminant level is 1 mg\/L. The HI707's low range (0-0.35 mg\/L) is perfectly suited for detecting dangerous nitrite levels in aquariums and ensuring safe drinking water.\u003c\/p\u003e\n\u003ch3\u003eHow to Use:\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eFill cuvette with 10 mL water sample to line\u003c\/li\u003e\n\u003cli\u003eAdd HI707 reagent packet and mix thoroughly\u003c\/li\u003e\n\u003cli\u003eWait for color development (20 seconds)\u003c\/li\u003e\n\u003cli\u003eInsert cuvette into HI707 Checker HC\u003c\/li\u003e\n\u003cli\u003ePress button to read nitrite concentration in mg\/L\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eReagent Availability:\u003c\/h3\u003e\n\u003cp\u003eReplacement reagents available separately as HI707-25 (25 tests) and HI707-100 (100 tests). Each reagent packet is pre-measured for consistent, accurate results.\u003c\/p\u003e\n\u003ch3\u003eMaintenance \u0026amp; Care:\u003c\/h3\u003e\n\u003cp\u003eClean cuvettes with distilled water after each use. Store in protective case when not in use. Replace battery when low battery indicator appears. Use CAL Check feature periodically to verify meter performance. Keep reagents stored in a cool, dry place.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote: Reagents sold separately after initial supply is used. For best results, use fresh reagents and follow all testing procedures carefully. Regular CAL Check validation recommended for quality assurance.\u003c\/em\u003e\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":42154597089367,"sku":"HI707","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/hi707-checkerhc-angle__85404.jpg?v=1764008325"},{"product_id":"hanna-microfiber-cloth-for-wiping-cuvettes-4-hi731318","title":"Hanna Microfiber Cloth for Wiping Cuvettes (4) - HI731318","description":"\u003cp\u003eEnsure your glass cuvettes are clean and free of debris for accurate measurements every time with this pack of microfiber cloths. These cloths remove dirt, grease, and fingerprints from the vials so that the glass is clean for the correct transmission of light.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLint free, microfiber cloth.\u003c\/li\u003e\n\u003cli\u003eWill not scratch glass cuvettes.\u003c\/li\u003e\n\u003cli\u003ePerfect for wiping the cuvettes used in handheld colorimeters, photometer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUsing cuvettes in photometers, colorimeters, and turbidity meters that are clean and free from scratches is critical in order to obtain an accurate measurement. These systems are optically based in which light must transmit through the glass vial in order to be detected by a silicon photodetector. Any impedance in the light path will affect the way that light will interact with the sample to be measured ultimately affecting the result obtained from the meter. Using clean HI731318 microfiber cloths will not scratch the cuvettes which can interfere with the optical system.\u003c\/p\u003e\n\u003ch4\u003eExample of optical systems used in photometers and turbidity meters\u003c\/h4\u003e\n\u003cp\u003ePhotometer optical system (HI96 series)\u003c\/p\u003e\n\u003cp\u003e\u003cimg sizes=\"(max-width: 335px) 100vw, 335px\" srcset=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/tungsten-lamp-optical-system.png?width=168\u0026amp;name=tungsten-lamp-optical-system.png 168w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/tungsten-lamp-optical-system.png?width=335\u0026amp;name=tungsten-lamp-optical-system.png 335w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/tungsten-lamp-optical-system.png?width=503\u0026amp;name=tungsten-lamp-optical-system.png 503w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/tungsten-lamp-optical-system.png?width=670\u0026amp;name=tungsten-lamp-optical-system.png 670w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/tungsten-lamp-optical-system.png?width=838\u0026amp;name=tungsten-lamp-optical-system.png 838w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/tungsten-lamp-optical-system.png?width=1005\u0026amp;name=tungsten-lamp-optical-system.png 1005w\" width=\"335\" alt=\"photometer-optical-system-HI96series\" src=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/tungsten-lamp-optical-system.png?width=335\u0026amp;name=tungsten-lamp-optical-system.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eISO turbidity optical system (HI98713, HI88713)\u003c\/p\u003e\n\u003cp\u003e\u003cimg sizes=\"(max-width: 295px) 100vw, 295px\" srcset=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/ISO-turbidity-optical-system.png?width=148\u0026amp;name=ISO-turbidity-optical-system.png 148w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/ISO-turbidity-optical-system.png?width=295\u0026amp;name=ISO-turbidity-optical-system.png 295w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/ISO-turbidity-optical-system.png?width=443\u0026amp;name=ISO-turbidity-optical-system.png 443w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/ISO-turbidity-optical-system.png?width=590\u0026amp;name=ISO-turbidity-optical-system.png 590w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/ISO-turbidity-optical-system.png?width=738\u0026amp;name=ISO-turbidity-optical-system.png 738w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/ISO-turbidity-optical-system.png?width=885\u0026amp;name=ISO-turbidity-optical-system.png 885w\" width=\"295\" alt=\"ISO turbidity optical system\" src=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/ISO-turbidity-optical-system.png?width=295\u0026amp;name=ISO-turbidity-optical-system.png\"\u003e\u003c\/p\u003e\n\u003cp\u003eTungsten lamp (EPA) optical system with 90\u003csup\u003eo\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eand 180\u003csup\u003eo\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003escattered light detectors along with a built-in photometer (HI93414, HI83414)\u003c\/p\u003e\n\u003cp\u003e\u003cimg sizes=\"(max-width: 347px) 100vw, 347px\" srcset=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system.png?width=174\u0026amp;name=photometer-optical-system.png 174w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system.png?width=347\u0026amp;name=photometer-optical-system.png 347w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system.png?width=521\u0026amp;name=photometer-optical-system.png 521w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system.png?width=694\u0026amp;name=photometer-optical-system.png 694w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system.png?width=868\u0026amp;name=photometer-optical-system.png 868w, https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system.png?width=1041\u0026amp;name=photometer-optical-system.png 1041w\" width=\"347\" alt=\"tungsten-lamps-optical-system\" src=\"https:\/\/cdn2.hubspot.net\/hubfs\/2134380\/001-website\/images\/photometer-optical-system.png?width=347\u0026amp;name=photometer-optical-system.png\"\u003e\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":42204146532439,"sku":"HI731318","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/cuvette-cleaning-cloths.jpg?v=1764715161"},{"product_id":"hanna-hi731331n-glass-cuvettes-22mm-photometer-turbidity-4-pack","title":"Hanna Instruments Glass Cuvettes HI731331N - 22mm Precision Cuvettes for Photometers \u0026 Turbidity Meters (4-Pack)","description":"\u003cp\u003e\u003cstrong\u003eEnsure measurement accuracy\u003c\/strong\u003e with Hanna Instruments HI731331N precision glass cuvettes. These lab-grade 22mm cuvettes are engineered for optimal optical clarity and accurate light transmission in colorimetric and turbidity measurements with Hanna portable photometers and turbidity meters.\u003c\/p\u003e\n\n\u003ch4\u003ePrecision Features:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptically clear glass:\u003c\/strong\u003e Precision-engineered construction ensures accurate light transmission for reliable measurements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e22mm standard diameter:\u003c\/strong\u003e Compatible with Hanna portable photometers and turbidity meters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLab-grade quality:\u003c\/strong\u003e Manufactured to strict tolerances for consistent, repeatable results\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable design:\u003c\/strong\u003e Built for repeated use in demanding laboratory and field environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValue 4-pack:\u003c\/strong\u003e Includes four high-quality cuvettes for extended use and replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProfessional Applications:\u003c\/h4\u003e\n\u003cp\u003eEssential for colorimetric water quality testing, turbidity measurement, pool and spa analysis, drinking water testing, wastewater monitoring, and laboratory photometric analysis. Whether you're a water treatment professional, lab technician, environmental scientist, or aquaculture specialist, these cuvettes deliver the precision you need for accurate optical measurements.\u003c\/p\u003e\n\n\u003ch4\u003eWhy Quality Matters:\u003c\/h4\u003e\n\u003cp\u003eClean, scratch-free cuvettes are critical for accurate optical measurements. The HI731331N cuvettes are manufactured from precision glass that maintains optical clarity through repeated use and cleaning cycles, ensuring measurement integrity for quality control, compliance testing, and research applications.\u003c\/p\u003e\n\n\u003ch4\u003eTechnical Specifications:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e HI731331N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 22mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Precision optical glass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 4 cuvettes per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Hanna portable photometers and turbidity meters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 10 oz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Romania\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProfessional-Grade Quality:\u003c\/h4\u003e\n\u003cp\u003eManufactured in Romania by Hanna Instruments to exacting optical standards. Trust Hanna Instruments for precision accessories that ensure the accuracy and reliability of your water testing equipment across laboratory, industrial, and field applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eCompatible with Hanna portable photometers and turbidity meters. Regular replacement recommended for maintaining measurement accuracy and instrument calibration integrity.\u003c\/em\u003e\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":42458641203287,"sku":"HI731331N","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/HI731331N-1200by1200__99003.jpg?v=1767628686"},{"product_id":"hanna-hi702-copper-checker-high-range-colorimeter","title":"Hanna HI702 Copper Checker | High Range Digital Colorimeter 0-5 ppm","description":"\u003ch2\u003eHI702 Copper Checker® HC High Range Colorimeter – Accurate Digital Copper Testing\u003c\/h2\u003e\u003cp\u003eEliminate the guesswork of color chart matching with the HI702 Checker® HC handheld colorimeter. This pocket-sized digital tester delivers precise high-range copper measurements (0-5 ppm) with lab-quality accuracy, making it the perfect alternative to subjective chemical test kits for aquariums, pools, plating operations, and water quality monitoring.\u003c\/p\u003e\u003ch3\u003eWhy Choose HI702 Copper Checker HC?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital precision\u003c\/strong\u003e – Eliminates subjective color chart interpretation with direct digital copper readings to 0.01 ppm resolution\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh range capability\u003c\/strong\u003e – Measures 0.00 to 5.00 ppm copper for industrial, plating, and high-concentration applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-button simplicity\u003c\/strong\u003e – Simple operation makes getting accurate copper results effortless, even for first-time users\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEPA-adapted method\u003c\/strong\u003e – Uses bicinchoninate reagent reaction (purple tint) for reliable, industry-standard measurements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresh or saltwater compatible\u003c\/strong\u003e – Works with both freshwater and marine applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-portable\u003c\/strong\u003e – Pocket-sized design (3.4\" x 2.4\" x 1.5\") weighs just 2.3 oz for easy field testing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCost-effective accuracy\u003c\/strong\u003e – More accurate than chemical test kits at a fraction of benchtop instrument costs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto shut-off\u003c\/strong\u003e – Conserves battery with automatic 10-minute power-down\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow It Works\u003c\/h3\u003e\u003cp\u003eThe HI702 uses an EPA-adapted colorimetric method where copper reacts with bicinchoninate reagent to produce a purple tint proportional to copper concentration. The built-in LED light source (575 nm) and silicon photocell detector measure the color intensity and display the precise copper concentration digitally – no color chart matching required.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI702\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.00 to 5.00 ppm (mg\/L) copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.01 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy @ 25°C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.05 ppm ±5% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTesting method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEPA-adapted bicinchoninate method\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight source\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED @ 575 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight detector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSilicon photocell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 x 1.5V AAA (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto shut-off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAfter 10 minutes of non-use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating environment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C (32 to 122°F), RH max 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e86.0 x 61.0 x 37.5 mm (3.4\" x 2.4\" x 1.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e64 g (2.3 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReplacement reagents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI702-25 (25 tests)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration check\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI702-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eManufactured in Romania by Hanna Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eEssential for high-range copper monitoring in marine and freshwater aquariums (copper-based medications), swimming pools and spas (algaecide residue), electroplating and metal finishing operations, industrial wastewater treatment, drinking water quality testing, environmental compliance monitoring, and educational laboratories. The 0-5 ppm range is ideal for applications where copper concentrations exceed typical low-range testing capabilities.\u003c\/p\u003e\u003ch3\u003eWhy Choose a Checker HC Over Test Kits?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEliminates subjectivity\u003c\/strong\u003e – No more squinting at color charts or debating between shades\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter accuracy\u003c\/strong\u003e – Digital precision vs. visual estimation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFaster results\u003c\/strong\u003e – Direct digital readout saves time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent performance\u003c\/strong\u003e – LED light source ensures repeatable measurements regardless of ambient lighting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional credibility\u003c\/strong\u003e – Lab-quality results for compliance and documentation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cp\u003eHI702 Checker® HC colorimeter, 2 sample cuvettes with caps, copper high range reagent starter kit (6 tests), AAA battery, instruction manual, and quick start guide.\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":42458663256151,"sku":"HI702","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/hi702-checkerhc-front_1__34977.jpg?v=1767632415"},{"product_id":"hanna-hi719-magnesium-checker-freshwater-colorimeter","title":"Hanna HI719 Magnesium Checker | Freshwater Digital Colorimeter 0-2 mg\/L","description":"\u003ch2\u003eProfessional Freshwater Magnesium Hardness Colorimeter for Aquariums \u0026amp; Aquaculture\u003c\/h2\u003e\u003cp\u003eThe Hanna HI719 Checker HC is a portable, professional-grade freshwater magnesium hardness colorimeter designed for accurate magnesium (Mg) measurement from 0.00 to 2.00 mg\/L in freshwater aquariums, aquaculture, and water quality applications. This handheld photometer delivers lab-quality results in the field with simple operation—just add reagent, insert the cuvette, and read magnesium hardness on the easy-to-read LCD display.\u003c\/p\u003e\u003ch3\u003eKey Features:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreshwater Magnesium Testing:\u003c\/strong\u003e Measures magnesium hardness from 0.00 to 2.00 mg\/L (ppm) with ±0.11 mg\/L accuracy—ideal for freshwater aquariums and aquaculture\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable \u0026amp; Handheld:\u003c\/strong\u003e Compact Checker HC design fits in your pocket for on-site testing anywhere\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLab-Quality Results:\u003c\/strong\u003e Advanced photometric technology delivers accurate, repeatable measurements comparable to benchtop instruments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Operation:\u003c\/strong\u003e Easy three-step process—fill cuvette, add reagent, read result—no complex procedures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD Display:\u003c\/strong\u003e Large, easy-to-read screen shows magnesium concentration in mg\/L (ppm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto-Off Function:\u003c\/strong\u003e Conserves battery life with automatic shutdown after non-use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAL Check:\u003c\/strong\u003e Built-in validation feature verifies meter performance for quality assurance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Includes meter, sample cuvettes, reagents for initial testing, and carrying case\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModel: HI719\u003c\/li\u003e\n\u003cli\u003eParameter: Magnesium Hardness (Mg)\u003c\/li\u003e\n\u003cli\u003eRange: 0.00 to 2.00 mg\/L (ppm)\u003c\/li\u003e\n\u003cli\u003eResolution: 0.01 mg\/L\u003c\/li\u003e\n\u003cli\u003eAccuracy: ±0.11 mg\/L ±5% of reading @ 25°C\u003c\/li\u003e\n\u003cli\u003eMethod: Adaptation of Calmagite method\u003c\/li\u003e\n\u003cli\u003eLight Source: LED @ 466 nm\u003c\/li\u003e\n\u003cli\u003eLight Detector: Silicon photocell\u003c\/li\u003e\n\u003cli\u003eBattery: 1 x 1.5V AAA (included)\u003c\/li\u003e\n\u003cli\u003eAuto-Off: After 10 minutes of non-use\u003c\/li\u003e\n\u003cli\u003eDimensions: 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5 inches)\u003c\/li\u003e\n\u003cli\u003eWeight: 1 lb\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: Romania\u003c\/li\u003e\n\u003cli\u003eSKU: HI719\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications:\u003c\/h3\u003e\u003cp\u003eEssential for freshwater aquarium magnesium monitoring (planted tanks, cichlid tanks, community aquariums), aquaculture water quality management (fish farms, hatcheries), freshwater shrimp breeding, environmental freshwater testing, laboratory analysis, and any application requiring accurate low-range magnesium measurement in freshwater systems. Perfect for aquarium hobbyists maintaining optimal water chemistry, aquaculture professionals, and environmental consultants.\u003c\/p\u003e\u003ch3\u003eWhat's Included:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHI719 Magnesium Hardness Checker HC\u003c\/li\u003e\n\u003cli\u003eSample cuvettes with caps (2)\u003c\/li\u003e\n\u003cli\u003eMagnesium Hardness reagents for initial testing\u003c\/li\u003e\n\u003cli\u003e1.5V AAA battery\u003c\/li\u003e\n\u003cli\u003eInstruction manual\u003c\/li\u003e\n\u003cli\u003eInstrument quality certificate\u003c\/li\u003e\n\u003cli\u003eRigid carrying case\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Test Magnesium Hardness?\u003c\/h3\u003e\u003cp\u003eMagnesium is a critical element in freshwater aquariums and aquaculture. In planted aquariums, magnesium is essential for photosynthesis and chlorophyll production—deficiency causes yellowing leaves and poor plant growth. For fish, magnesium contributes to general hardness (GH) and affects osmoregulation, bone development, and overall health. In cichlid tanks, proper magnesium levels help maintain ideal water hardness. The HI719's low range (0-2 mg\/L) is perfectly suited for freshwater applications where precise magnesium monitoring ensures optimal conditions for fish and plants.\u003c\/p\u003e\u003ch3\u003eHow to Use:\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eFill cuvette with 10 mL freshwater sample to line\u003c\/li\u003e\n\u003cli\u003eAdd HI719 reagent packet and mix thoroughly\u003c\/li\u003e\n\u003cli\u003eWait for color development (1 minute)\u003c\/li\u003e\n\u003cli\u003eInsert cuvette into HI719 Checker HC\u003c\/li\u003e\n\u003cli\u003ePress button to read magnesium hardness in mg\/L\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eReagent Availability:\u003c\/h3\u003e\u003cp\u003eReplacement reagents available separately as HI719-25 (25 tests) and HI719-100 (100 tests). Each reagent packet is pre-measured for consistent, accurate results.\u003c\/p\u003e\u003ch3\u003eMaintenance \u0026amp; Care:\u003c\/h3\u003e\u003cp\u003eClean cuvettes with distilled water after each use. Store in protective case when not in use. Replace battery when low battery indicator appears. Use CAL Check feature periodically to verify meter performance. Keep reagents stored in a cool, dry place.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eNote: Reagents sold separately after initial supply is used. For best results, use fresh reagents and follow all testing procedures carefully. Regular CAL Check validation recommended for quality assurance.\u003c\/em\u003e\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":42458980221015,"sku":"HI719","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/hi719-checkerhc-front__66136.jpg?v=1767654177"},{"product_id":"hanna-saltwater-aquarium-ultra-low-range-nitrite-colorimeter-checker-hc-hi764","title":"Hanna Saltwater Aquarium Ultra Low Range Nitrite Colorimeter - Checker HC - HI764","description":"\u003cp\u003eStop struggling to get accurate results for your saltwater aquarium with our simple handheld colorimeter. Our nitrite colorimeter fills the gap between nitrite test kits and advanced instrumentation. Standard test kits have limited accuracy since they depend on the human eye to determine colors. Our handheld colorimeter eliminates the trouble of matching to a color chart by providing a direct saltwater nitrite result.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOur portable handheld colorimeter goes where you go.\u003c\/li\u003e\n\u003cli\u003eAchieve your nitrite results easily with simple, one-button design.\u003c\/li\u003e\n\u003cli\u003eDon’t worry about matching the right color, our colorimeter does it for you.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNitrification is the biological oxidation of ammonia (ammonium ion) into nitrite followed by the oxidation of the nitrites to nitrates. The first step of this 2-step process is carried out in an aquarium by nitrifying bacteria. During this quick process, the ammonium levels drop while the nitrite levels increase. Since nitrite is just as harmful as ammonia, nitrite levels should be maintained at immeasurable levels. A mature biological filter should be able to keep nitrite levels low.\u003cbr\u003e\u003cbr\u003eAlso, if tap water is to be used in an aquarium, it is recommended that it be tested for phosphate, as well as silicate, ammonia, nitrate, nitrite, pH, and alkalinity.\u003cbr\u003e\u003cbr\u003eThe HI764 Checker® Handheld Colorimeter bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate, while professional instrumentation can cost hundreds of dollars and can be time-consuming to calibrate and maintain. Hanna Checker®™s are accurate, affordable and easy to use.\u003cbr\u003e\u003cbr\u003eTo begin measurements, first, zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the Checker®, press the button and read the results. It™s that easy.\u003cbr\u003e\u003cbr\u003eThe contoured style of these Checker®™s fit in your palm and pocket perfectly and the large LCD is easy to read. The auto shut-off feature assures the battery life will not be drained if you forget to turn it off.\u003c\/p\u003e\n\u003ch4\u003eFeatures at-a-glance:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEasier to use and more accurate than chemical test kits\u003c\/li\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003cli\u003eSmall size, big convenience\u003c\/li\u003e\n\u003cli\u003eIdeal for: Water quality, Environmental, Plating, Education\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI764\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 200 ppb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 ppb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy @ 25°C (77°F)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±10 ppb ±4% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Source\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED @ 525 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Detector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003esilicon photocell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMethod\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eadaptation of the EPA Diazotization method 354.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) 1.5V AAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto shut-off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eafter two minutes of non-use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C (32 to 122°F) RH max 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e64 g (2.3 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrdering Information\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI764 Checker®HC is supplied with sample cuvettes with caps (2), marine nitrite ULR reagent starter kit (reagents for 6 tests), battery, instructions and quick start guide.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReagent Set\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI764-25 (25 tests)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration Check\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI764-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":42470875660375,"sku":"HI764","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/hi764-checkerhc-angle-_1___35148.jpg?v=1768266850"},{"product_id":"hanna-hi723-chromium-vi-checker-high-range-colorimeter","title":"Hanna HI723 Chromium VI Checker | High Range Digital Colorimeter 0-1000 µg\/L","description":"\u003ch2\u003eHanna HI723 High Range Chromium VI Colorimeter Checker - Professional Cr6+ Water Testing\u003c\/h2\u003e\u003cp\u003eDetect and measure high concentrations of hexavalent chromium with precision using the \u003cstrong\u003eHanna HI723 High Range Chromium VI Colorimeter Checker\u003c\/strong\u003e. This portable, professional-grade instrument measures Cr6+ from 0 to 1000 µg\/L (ppb), making it essential for industrial wastewater monitoring, environmental compliance testing, and quality control in metal finishing operations.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Range Measurement:\u003c\/strong\u003e Accurately measures chromium VI from 0 to 1000 µg\/L (ppb) for industrial applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Results:\u003c\/strong\u003e Get accurate Cr6+ readings in minutes with simple colorimetric analysis\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable Design:\u003c\/strong\u003e Compact checker format allows on-site testing in the field or at the production line\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEPA Compliant Method:\u003c\/strong\u003e Uses adaptation of EPA method 7196A for reliable, recognized results\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Operation:\u003c\/strong\u003e User-friendly interface requires minimal training for accurate measurements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCost-Effective:\u003c\/strong\u003e Affordable alternative to expensive lab equipment without sacrificing accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePerfect For\u003c\/h3\u003e\u003cp\u003eEnvironmental consultants monitoring industrial discharge, wastewater treatment facilities ensuring compliance, metal finishing operations tracking hexavalent chromium levels, electroplating facilities, leather tanning operations, and regulatory agencies conducting field inspections. Whether you're testing cooling tower water, industrial effluent, or groundwater near contaminated sites, the HI723 delivers the accuracy you need.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModel: HI723\u003c\/li\u003e\n\u003cli\u003eParameter: Chromium VI (Hexavalent Chromium)\u003c\/li\u003e\n\u003cli\u003eRange: 0 to 1000 µg\/L (ppb)\u003c\/li\u003e\n\u003cli\u003eResolution: 1 µg\/L\u003c\/li\u003e\n\u003cli\u003eAccuracy: ±5 µg\/L ±5% of reading at 25°C\u003c\/li\u003e\n\u003cli\u003eMethod: Adaptation of EPA method 7196A (diphenylcarbohydrazide method)\u003c\/li\u003e\n\u003cli\u003eLight Source: LED @ 525 nm\u003c\/li\u003e\n\u003cli\u003ePower: 1 x 9V battery (included)\u003c\/li\u003e\n\u003cli\u003eWeight: 15 oz\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: Romania\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHI723 Chromium VI Checker\u003c\/li\u003e\n\u003cli\u003eSample cuvette with cap (2)\u003c\/li\u003e\n\u003cli\u003e9V battery\u003c\/li\u003e\n\u003cli\u003eInstruction manual\u003c\/li\u003e\n\u003cli\u003eInstrument quality certificate\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose the HI723?\u003c\/h3\u003e\u003cp\u003eImagine arriving at an industrial site and getting immediate, accurate chromium VI readings without hauling heavy lab equipment or waiting days for results. The HI723 fits in your hand yet delivers laboratory-grade accuracy. The simple add-reagent-and-read process means even field technicians can perform EPA-compliant testing with confidence. The bright LED display is easy to read even in challenging lighting conditions, and the rugged construction withstands the demands of industrial environments.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEnsure compliance and protect water quality.\u003c\/strong\u003e Add the Hanna HI723 High Range Chromium VI Colorimeter to your cart and start monitoring Cr6+ levels with professional accuracy today.\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":42487112269911,"sku":"HI723","price":74.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/hi723-checkerhc-front__56963.jpg?v=1768959244"},{"product_id":"hanna-hi746-iron-checker-low-range-colorimeter","title":"Hanna HI746 Iron Checker | Low Range Digital Colorimeter 0-5 mg\/L","description":"\u003ch2\u003eHanna HI746 Low Range Iron Colorimeter Checker - Professional Fe Water Quality Testing\u003c\/h2\u003e\u003cp\u003eDetect and measure low concentrations of iron with laboratory precision using the \u003cstrong\u003eHanna HI746 Low Range Iron Colorimeter Checker\u003c\/strong\u003e. This portable, professional-grade instrument measures total iron (Fe) from 0 to 5.00 mg\/L (ppm) with exceptional ±0.04 mg\/L accuracy, making it essential for drinking water quality testing, pool maintenance, aquarium monitoring, and environmental compliance.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Range Precision:\u003c\/strong\u003e Accurately measures iron from 0 to 5.00 mg\/L (ppm) for drinking water and sensitive applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory Accuracy:\u003c\/strong\u003e ±0.04 mg\/L precision ensures reliable results for compliance and quality control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Results:\u003c\/strong\u003e Get accurate iron readings in minutes with simple colorimetric analysis\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable Design:\u003c\/strong\u003e Compact checker format allows on-site testing in the field, at the tap, or poolside\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEPA Compliant Method:\u003c\/strong\u003e Uses adaptation of EPA method 315B (phenanthroline method) for recognized results\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Operation:\u003c\/strong\u003e User-friendly interface requires minimal training for accurate measurements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCost-Effective:\u003c\/strong\u003e Affordable alternative to expensive lab equipment without sacrificing accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePerfect For\u003c\/h3\u003e\u003cp\u003eWater treatment facilities monitoring drinking water quality, pool and spa professionals preventing staining and discoloration, aquarium enthusiasts maintaining optimal water chemistry, well water testing for homeowners, environmental consultants conducting field surveys, and municipal water systems ensuring compliance. Whether you're testing tap water, well water, pool water, or aquarium systems, the HI746 delivers the precision you need to detect iron before it causes problems.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModel: HI746\u003c\/li\u003e\n\u003cli\u003eParameter: Iron (Total Fe)\u003c\/li\u003e\n\u003cli\u003eRange: 0.00 to 5.00 mg\/L (ppm)\u003c\/li\u003e\n\u003cli\u003eResolution: 0.01 mg\/L\u003c\/li\u003e\n\u003cli\u003eAccuracy: ±0.04 mg\/L ±4% of reading at 25°C\u003c\/li\u003e\n\u003cli\u003eMethod: Adaptation of EPA method 315B (phenanthroline method)\u003c\/li\u003e\n\u003cli\u003eLight Source: LED @ 525 nm\u003c\/li\u003e\n\u003cli\u003ePower: 1 x 9V battery (included)\u003c\/li\u003e\n\u003cli\u003eWeight: 1.3 lbs\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: Romania\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHI746 Iron Checker colorimeter\u003c\/li\u003e\n\u003cli\u003eSample cuvette with cap (2)\u003c\/li\u003e\n\u003cli\u003e9V battery\u003c\/li\u003e\n\u003cli\u003eInstruction manual\u003c\/li\u003e\n\u003cli\u003eInstrument quality certificate\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose the HI746?\u003c\/h3\u003e\u003cp\u003eImagine testing your drinking water and getting immediate, accurate iron readings without sending samples to a lab or waiting days for results. The HI746 fits in your hand yet delivers laboratory-grade accuracy at the low concentrations that matter most for drinking water and aquariums. The simple add-reagent-and-read process means anyone can perform EPA-compliant testing with confidence. The bright LED display is easy to read even in dim lighting, and the rugged construction withstands the demands of field testing.\u003c\/p\u003e\u003cp\u003eIron contamination can cause rusty stains, metallic taste, and equipment damage—but it's invisible at low concentrations. The HI746's exceptional sensitivity detects iron before you see or taste it, giving you time to take corrective action. Whether you're protecting your family's drinking water, maintaining crystal-clear pool water, or ensuring optimal conditions for sensitive aquatic life, this colorimeter gives you the data you need to make informed decisions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEnsure water quality and prevent iron problems.\u003c\/strong\u003e Add the Hanna HI746 Low Range Iron Colorimeter to your cart and start monitoring Fe levels with professional accuracy today.\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":42487166042199,"sku":"HI746","price":74.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/hi746-checkerhc-front_1__70552.jpg?v=1768960417"},{"product_id":"hanna-hi762-ultra-low-range-free-chlorine-checker-hc-0-500-ppb","title":"Hanna HI762 Ultra Low Range Free Chlorine Checker HC - 0-500 ppb Colorimeter","description":"\u003ch2\u003eHanna HI762 Ultra Low Range Free Chlorine Checker HC – Precision ppb-Level Colorimeter\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHanna HI762 Ultra Low Range Free Chlorine Checker HC\u003c\/strong\u003e is a portable colorimeter designed for ultra-sensitive free chlorine measurement from \u003cstrong\u003e0 to 500 ppb (parts per billion)\u003c\/strong\u003e. This compact, handheld photometer delivers lab-grade accuracy for applications requiring precise detection of trace free chlorine levels in drinking water, aquariums, pharmaceutical water systems, and laboratory analysis.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-low range 0-500 ppb\u003c\/strong\u003e – detects trace free chlorine levels with exceptional sensitivity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChecker HC design\u003c\/strong\u003e – portable, handheld colorimeter for field and lab use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLab-grade accuracy\u003c\/strong\u003e – precise measurement for critical water quality applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple operation\u003c\/strong\u003e – easy-to-use interface with clear digital display\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast results\u003c\/strong\u003e – quick readings for efficient testing workflows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable construction\u003c\/strong\u003e – built to withstand demanding environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery powered\u003c\/strong\u003e – portable operation without AC power requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003ePerfect for drinking water safety testing, aquarium dechlorination verification, pharmaceutical water quality control, ultrapure water systems, laboratory trace chlorine analysis, and environmental monitoring. Whether you're a water treatment professional, lab technician, aquarium specialist, or pharmaceutical QC analyst, the HI762 delivers the ppb-level precision you need for confident ultra-low free chlorine measurement.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: HI762\u003c\/li\u003e\n\u003cli\u003eParameter: Free Chlorine (ultra-low range)\u003c\/li\u003e\n\u003cli\u003eRange: 0-500 ppb (parts per billion)\u003c\/li\u003e\n\u003cli\u003eProduct Type: Checker HC Colorimeter\u003c\/li\u003e\n\u003cli\u003eDisplay: Digital LCD\u003c\/li\u003e\n\u003cli\u003ePower: Battery operated\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: Romania\u003c\/li\u003e\n\u003cli\u003eSKU: HI762\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTrust Hanna Instruments for ultra-sensitive water testing solutions that meet the demands of professionals in drinking water safety, pharmaceutical manufacturing, aquaculture, and laboratory trace analysis.\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":42510840823895,"sku":"HI762","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/free-chlorine-ulr-hi762__05690.jpg?v=1770159449"},{"product_id":"hanna-hi767-marine-nitrite-low-range-checker-hc-0-999-ppb","title":"Hanna HI767 Marine Nitrite Low Range Checker HC - 0-999 ppb Colorimeter","description":"\u003ch2\u003eHanna HI767 Marine Nitrite Low Range Checker HC – Precision ppb-Level Marine Testing\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eHanna HI767 Marine Nitrite Low Range Checker HC\u003c\/strong\u003e is a portable colorimeter designed for ultra-sensitive marine nitrite measurement from \u003cstrong\u003e0 to 999 ppb (parts per billion)\u003c\/strong\u003e. This compact, handheld photometer delivers lab-grade accuracy for critical nitrite monitoring in reef aquariums, marine aquaculture, and saltwater laboratory analysis, helping you maintain optimal water quality for sensitive marine life.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow range 0-999 ppb\u003c\/strong\u003e – detects trace nitrite levels critical for marine environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine-specific calibration\u003c\/strong\u003e – optimized for saltwater applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChecker HC design\u003c\/strong\u003e – portable, handheld colorimeter for field and lab use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLab-grade accuracy\u003c\/strong\u003e – precise measurement for critical reef and marine water quality\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple operation\u003c\/strong\u003e – easy-to-use interface with clear digital display\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast results\u003c\/strong\u003e – quick readings for efficient testing workflows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable construction\u003c\/strong\u003e – built to withstand marine environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery powered\u003c\/strong\u003e – portable operation without AC power requirements\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003ePerfect for reef aquarium nitrite monitoring, marine aquaculture water quality management, saltwater fish breeding, coral propagation facilities, marine laboratory research, and public aquarium maintenance. Whether you're a reef hobbyist, marine aquaculture professional, or marine biologist, the HI767 delivers the ppb-level precision you need for confident marine nitrite measurement.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModel: HI767\u003c\/li\u003e\n\u003cli\u003eParameter: Marine Nitrite (low range)\u003c\/li\u003e\n\u003cli\u003eRange: 0-999 ppb (parts per billion)\u003c\/li\u003e\n\u003cli\u003eProduct Type: Checker HC Colorimeter\u003c\/li\u003e\n\u003cli\u003eApplication: Marine\/Saltwater\u003c\/li\u003e\n\u003cli\u003eDisplay: Digital LCD\u003c\/li\u003e\n\u003cli\u003ePower: Battery operated\u003c\/li\u003e\n\u003cli\u003eWeight: 15 oz\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: Romania\u003c\/li\u003e\n\u003cli\u003eSKU: HI767\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTrust Hanna Instruments for ultra-sensitive marine water testing solutions that meet the demands of reef aquarium enthusiasts, marine aquaculture professionals, and saltwater research laboratories.\u003c\/p\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":42510995030103,"sku":"HI767","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/HI767_Angle-Open-720x720__15968.jpg?v=1770163654"},{"product_id":"hanna-hi726-nickel-checker-high-range-colorimeter","title":"Hanna HI726 Nickel Checker | High Range Digital Colorimeter 0-7 g\/L","description":"\u003cp\u003eGain accurate water testing results with our simple handheld colorimeter. Our high range nickel colorimeter fills the gap between advanced technology and your typical chemical test kit. Our handheld colorimeter eliminates the hassle of matching to a color chart by providing a direct nickel result digitally so you don't have to struggle anymore.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSmall and portable design to take it anywhere.\u003c\/li\u003e\n\u003cli\u003eSimple, one-button operation makes using our colorimeter easy.\u003c\/li\u003e\n\u003cli\u003eEnsure consistent results across samples with the built in reaction timer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe HI726 Checker\u003csup\u003e®\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eHC (Handheld Colorimeter) provides a simple, accurate and cost-effective way to measure nickel. Commonly used by both the electroplating and battery industries, nickel is actively monitored in wastewater due to damage it can cause to plants and aquatic life. Designed as a more accurate alternative to chemical test kits, the HI726 provides quick, accurate results in a few easy steps.\u003c\/p\u003e\n\u003ch4\u003eFeatures at-a-glance:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEasier to use and more accurate than chemical test kits\u003c\/li\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003cli\u003eSmall size, big convenience\u003c\/li\u003e\n\u003cli\u003eIdeal for: Water Quality, Environmental, Industrial\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI726\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.00 to 7.00 g\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.01 g\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy @ 25°C (77°F)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.10 g\/L ±5% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Source\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED @ 575 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Detector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003esilicon photocell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMethod\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eadaptation of the photometric method\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) 1.5V AAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto shut-off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eafter ten minutes of non-use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C (32 to 122°F) RH max 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e64 g (2.3 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrdering Information\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI726 Checker®HC is supplied with sample cuvettes with caps (2), nickel HR reagent starter kit (reagents for 6 tests), battery, instructions and quick start guide.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReagent Set\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI726-25 (25 tests)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration Check\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI726-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":42521234767959,"sku":"HI726","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/hi726-checkerhc-front__60498.jpg?v=1770760111"},{"product_id":"hanna-hi749-chromium-vi-colorimeter-low-range","title":"Hanna Instruments Low Range Chromium VI Colorimeter Checker HC-HI749","description":"\u003cp\u003eGet accurate water testing results with our simple handheld colorimeter. Our low range chromium VI colorimeter gives you more precise technology than your typical chemical test kit. Don't struggle to determine colors visually, our handheld colorimeter eliminates the hassle of matching to a color chart by providing a direct chromium VI result digitally.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOur portable handheld colorimeter is easily carried in your pocket.\u003c\/li\u003e\n\u003cli\u003eSimple, one-button operation makes getting your chromium VI results easy.\u003c\/li\u003e\n\u003cli\u003eQuickly get your results without using a color chart.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe HI749 Checker\u003csup\u003e®\u003c\/sup\u003e\u003cspan\u003e \u003c\/span\u003eHC (Handheld Colorimeter) provides a simple, accurate and cost-effective way to measure chromium VI. Due to its corrosion-resistant properties, hexavalent chromium plays an important part in the plating industry and cooling towers. However, due to its toxic and carcinogenic nature, chromium 6 must be must be sufficiently treated prior to wastewater discharge. Designed as a more accurate alternative to chemical test kits, the HI749 provides quick, accurate results in a few easy steps.\u003c\/p\u003e\n\u003ch4\u003eFeatures at-a-glance:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEasier to use and more accurate than chemical test kits\u003c\/li\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003cli\u003eSmall size, big convenience\u003c\/li\u003e\n\u003cli\u003eIdeal for: Water Quality, Education, Industrial, Municipal Water\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI749\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 300 ppb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 ppb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy @ 25°C (77°F)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±2 ppb ±4% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Source\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED @ 525 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLight Detector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003esilicon photocell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMethod\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eadaptation of the ASTM, Manual of Water and Enviornmental Technology, D 1687-92, Diphenylcarbohydrazide method\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) 1.5V AAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto shut-off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eafter ten minutes of non-use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C (32 to 122°F) RH max 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e64 g (2.3 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrdering Information\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI749 Checker®HC is supplied with sample cuvettes with caps (2), chromium LR reagent starter kit (reagents for 6 tests), battery, instructions and quick start guide.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReagent Set\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI749-25 (25 tests)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration Check\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHI749-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"HANNA Instruments","offers":[{"title":"Default Title","offer_id":42597585518679,"sku":"HI749","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/hi749-checkerhc-angle__38040.jpg?v=1773081036"}],"url":"https:\/\/getultimatenow.com\/collections\/hanna-instruments-photometers\/hi731331n.oembed","provider":"Get Ultimate Now ","version":"1.0","type":"link"}