{"product_id":"milwaukee-mw801-pro-ph-ec-tds-3-in-1-combo-meter-atc-se600-probe","title":"Milwaukee MW801 PRO pH\/EC\/TDS 3-in-1 Combo Meter | ATC | SE600 Probe | Hydroponics \u0026 Aquarium","description":"\u003ch2\u003eMilwaukee MW801 PRO 3-in-1 pH, EC \u0026amp; TDS Combo Meter with ATC\u003c\/h2\u003e\n\u003cp\u003eTake complete control of your water chemistry with the \u003cstrong\u003eMilwaukee MW801 PRO\u003c\/strong\u003e — a professional-grade, 3-in-1 combo meter that measures \u003cstrong\u003epH, electrical conductivity (EC), and total dissolved solids (TDS)\u003c\/strong\u003e simultaneously using a single integrated SE600 probe. Built for demanding applications in hydroponics, aquariums, aquaponics, drinking water testing, and laboratory environments, the MW801 PRO delivers lab-quality accuracy in a rugged, portable package.\u003c\/p\u003e\n\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-in-1 Testing\u003c\/strong\u003e — Measure pH, EC, and TDS with one meter and one probe; no juggling multiple devices or probes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e±0.2 pH Lab-Grade Accuracy\u003c\/strong\u003e — Reliable, professional results you can trust for critical water quality decisions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Temperature Compensation (ATC)\u003c\/strong\u003e — Built-in temperature correction from 32–122°F (0–50°C) for consistent readings regardless of sample temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaceable SE600 Combination Probe\u003c\/strong\u003e — Fiber junction design resists fertilizer and nutrient contamination, extending probe life in demanding hydroponic and aquaculture environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 1-Point Manual Calibration\u003c\/strong\u003e — Easy calibration for both pH and EC with included calibration solutions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRugged \u0026amp; Portable\u003c\/strong\u003e — Lightweight design (0.36 lbs with battery) with a large, easy-to-read display for field and bench use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150-Hour Battery Life\u003c\/strong\u003e — Long-lasting 9V alkaline battery keeps you testing longer between replacements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy the MW801 PRO?\u003c\/h2\u003e\n\u003cp\u003epH, EC, and TDS levels are critical indicators of water quality in aquariums, hydroponic systems, and drinking water. Elevated TDS can reduce water clarity, affect taste, impair fish health, and limit aquatic plant photosynthesis. The MW801 PRO gives you precise, simultaneous control over all three parameters — with professional accuracy and exceptional ease of use — in one compact instrument.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003epH Range:\u003c\/strong\u003e 0.0 – 14.0 pH | Resolution: 0.1 pH | Accuracy: ±0.2 pH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Range:\u003c\/strong\u003e 0 – 1990 µS\/cm | Resolution: 10 µS\/cm | Accuracy: ±2% FS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTDS Range:\u003c\/strong\u003e 0 – 1990 ppm | Resolution: 10 ppm | Accuracy: ±2% FS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Compensation:\u003c\/strong\u003e Automatic (ATC), 32–122°F (0–50°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe:\u003c\/strong\u003e SE600 combination pH\/EC\/TDS probe with 3-foot cable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e Manual 1-point for pH \u0026amp; EC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTDS Conversion Factor:\u003c\/strong\u003e 0.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e 1 × 9V alkaline | Battery Life: 150 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 7.3 × 3.2 × 1.8 in (185 × 82 × 45 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.36 lbs \/ 0.165 kg (with battery)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e MW801 | Barcode: 810666003815\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Romania\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMW801 PRO meter body\u003c\/li\u003e\n\u003cli\u003eSE600 combination pH\/EC\/TDS probe (3-foot cable)\u003c\/li\u003e\n\u003cli\u003e9V alkaline battery\u003c\/li\u003e\n\u003cli\u003eM10007B — pH 7.01 calibration buffer solution sachet\u003c\/li\u003e\n\u003cli\u003eM10031B — 1413 µS\/cm EC calibration solution sachet\u003c\/li\u003e\n\u003cli\u003eM10080B — 800 ppm TDS calibration solution sachet\u003c\/li\u003e\n\u003cli\u003eInstruction manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHydroponics nutrient solution management\u003c\/li\u003e\n\u003cli\u003eAquarium \u0026amp; reef tank water quality monitoring\u003c\/li\u003e\n\u003cli\u003eAquaponics system management\u003c\/li\u003e\n\u003cli\u003eDrinking water \u0026amp; tap water testing\u003c\/li\u003e\n\u003cli\u003eWastewater \u0026amp; environmental analysis\u003c\/li\u003e\n\u003cli\u003eLaboratory \u0026amp; educational use\u003c\/li\u003e\n\u003cli\u003ePool \u0026amp; spa water chemistry\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProbe Care \u0026amp; Maintenance\u003c\/h2\u003e\n\u003cp\u003eThe SE600 probe integrates both pH and EC sensors. Proper maintenance ensures peak accuracy and extends probe life:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e Always store with the cap filled with buffer or storage solution — never plain water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCleaning:\u003c\/strong\u003e Soak the probe regularly in cleaning solution to remove residue and salt deposits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e Calibrate after cleaning and before each testing session\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnique:\u003c\/strong\u003e Gently stir the probe in the sample for faster, more accurate readings\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended:\u003c\/strong\u003e Pair with the \u003cstrong\u003eMilwaukee pH Maintenance Kit (PH-Main)\u003c\/strong\u003e to clean, condition, and protect your electrode for peak long-term performance.\u003c\/p\u003e\n\n\u003ch2\u003eWhat Customers Say\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e\"Superb meter, easy to use, great customer service.\"\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\"Best meter I have ever owned.\"\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\"I have owned this meter for almost 8 years and only replaced the probe once. The calibration knobs are easy to use, and even when I am less than gentle with the thing it keeps on going. I wouldn’t consider any other meter.\"\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\"The best meter on the market and Milwaukee customer service is the best.\"\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eWhy Milwaukee Instruments?\u003c\/h2\u003e\n\u003cp\u003eMilwaukee Instruments is trusted worldwide by professionals in hydroponics, aquaculture, water treatment, and laboratory science. The MW801 PRO combines Milwaukee’s reputation for rugged construction, long-term reliability, and exceptional customer support — backed by years of proven performance in the most demanding water testing applications.\u003c\/p\u003e","brand":"MILWAUKEE INSTRUMENTS","offers":[{"title":"Default Title","offer_id":40254516494423,"sku":"MW801","price":294.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1555\/0581\/files\/MW801__80303.jpg?v=1695679912","url":"https:\/\/getultimatenow.com\/products\/milwaukee-mw801-pro-ph-ec-tds-3-in-1-combo-meter-atc-se600-probe","provider":"Get Ultimate Now ","version":"1.0","type":"link"}