Meters/Controllers

Advanced pH reader for water quality assessment designed to help monitor and maintain proper pH levels. Measures the acidity, alkalinity, and temperature of water for gardens, aquariums, pools, and more. Replaceable sensor probe with sensitive glass...

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...

  High-quality calibration solutions   Effective, affordable pH calibration   Bluelab pH 4.0 Calibration Solution - 250 ml is essential for use with all Bluelab pH products...

A corded sensor designed for use with AC Infinity universal controllers in HVAC and grow applications. Engineered with Swiss-made thermal-alloy probe heads offering precise temperature and humidity measurements. Adapts to rapid climate...

GroStar GS2 Soil pH Pen Lab grade instruments designed specifically for growers! Includes: pH 7 &  pH 4 solution (50ml bottles of each), KCL soaking solution (10ml bottle), cleaning brush, hole dibber, lanyard and user...

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...

Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is optional. Fully waterproof. Auto off function and hold reading...