{"product_id":"apera-instruments-5021-conductivity-ec-pen-tester-hydroponics","title":"Apera Instruments 5021 Conductivity (EC) Pen Tester – Hydroponics \u0026 Water Quality","description":"\u003ch1\u003eApera Instruments 5021 Conductivity (EC) Pen Tester\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eApera 5021\u003c\/strong\u003e is a pocket-size electrical conductivity (EC) pen tester built for fast, reliable water quality checks in hydroponics, aquaponics, irrigation, and general field applications. Part of the Eco Series, it features a \u003cstrong\u003ededicated fixed conductivity sensor\u003c\/strong\u003e optimized for rapid stabilization and accurate EC readings — instantly verify nutrient solution strength, water purity, or irrigation water quality without complex setup. At just 6 oz, it slips into any pocket or grow kit for on-the-spot conductivity measurement.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the Apera 5021?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDedicated EC Sensor\u003c\/strong\u003e — fixed, parameter-specific probe delivers fast stabilization and accurate conductivity readings without cross-parameter interference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydroponics-Ready\u003c\/strong\u003e — quickly verify nutrient solution EC to ensure optimal plant uptake and prevent over- or under-feeding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Compact \u0026amp; Lightweight\u003c\/strong\u003e — 6 oz; fits in any pocket, grow kit, or field bag for true on-the-go testing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Point-and-Read Operation\u003c\/strong\u003e — no complex menus; instant EC verification for growers, irrigation technicians, and field users\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCost-Effective\u003c\/strong\u003e — professional-grade conductivity accuracy at an economical price; no expensive benchtop meter required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Maintenance\u003c\/strong\u003e — rinse and store at room temperature (15–25°C); minimal upkeep required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHydroponics and aquaponics: nutrient solution EC monitoring and management\u003c\/li\u003e\n\u003cli\u003eIrrigation and agriculture: water conductivity checks for crop health\u003c\/li\u003e\n\u003cli\u003eDrinking water and RO systems: general water purity and mineral content screening\u003c\/li\u003e\n\u003cli\u003eAquariums: water conductivity and mineral balance monitoring\u003c\/li\u003e\n\u003cli\u003eEnvironmental field sampling: general water quality conductivity screening\u003c\/li\u003e\n\u003cli\u003eEducation and research: classroom and field conductivity demonstrations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eEco Series Model Comparison\u003c\/h2\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong style=\"color:#aa00aa;\"\u003e5021\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong style=\"color:#aa00aa;\"\u003eConductivity (EC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong style=\"color:#aa00aa;\"\u003eGeneral water conductivity \u0026amp; hydroponics\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e5031\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTDS\u003c\/td\u003e\n\u003ctd\u003eDrinking water, RO systems, purity checks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e5041\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eORP\u003c\/td\u003e\n\u003ctd\u003ePools, spas, disinfection monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e5051\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSalinity\u003c\/td\u003e\n\u003ctd\u003eGeneral salinity monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e5052\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSaltwater Salinity\u003c\/td\u003e\n\u003ctd\u003eSaltwater aquariums \u0026amp; marine testing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e5053\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNaCl Salinity\u003c\/td\u003e\n\u003ctd\u003eSodium chloride concentration checks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasured Parameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectrical Conductivity (EC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFixed, dedicated conductivity sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFormat\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle Unit (1-EA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Conditions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15–25°C (room temperature)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 oz (approx. 0.375 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEco Series Compact Pen Testers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"APERA Instruments","offers":[{"title":"Default Title","offer_id":44162531557463,"sku":"5021","price":52.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/5053_e1645f85-7875-4953-9276-ee737801ee36.avif?v=1786657057","url":"https:\/\/getultimatenow.com\/products\/apera-instruments-5021-conductivity-ec-pen-tester-hydroponics","provider":"Get Ultimate Now ","version":"1.0","type":"link"}