Meters/Controllers

Hydroponic pH reader for water quality assessment to help monitor and maintain proper solution levels. Measures acidity, alkalinity, EC, TDS, temp, and salinity of water for gardens, aquariums, pools, and more. Replaceable sensor probe with sensitive...

Impossibly tough, an EC meter built to last a lifetime    Measure up to 3.6 EC, 36 CF, 1800 ppm 500 or 2520 ppm 700 Robust and reliable construction for long-lasting value Fully waterproof; splash, submerge or sink - we've...

Thousands of food and beverage professionals and hobbyists, from chefs and food quality professionals to brewers and wine makers, have moved to digital BRIX measurement from less accurate and less precise optical refractometers. WHAT PEOPLE ARE...

AI21040 - GroStar GS4 pH/EC/500ppm/700ppm & Temp (5-in-1) Combo PenLab grade instruments designed specifically for growers!Includes: • 2-year warranty (instrument)• 1-year warranty (probe)• pH 7 & pH4 calibration solution...