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HM Digital COM 100 Waterproof EC TDS & Temperature Meter WQA certified water filter MI414 has a built in fructose refractometer MI414 has a built in timer that ensures appropriate reaction time is used for the chemical reaction If the electrode becomes dry and 2 AAA batteries The COM 100 is a professional grade EC TDS Temperature meter engineered for precision water quality testing across demanding applications — from hydroponics and aquaculture to laboratory analysis
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