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TDS Meter Water Tester
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Water pH Meter and TDS Meter, LAWNFUL pH and 3 in 1 TDS&EC Water Tester Combo, Turbidity Meter, ±0.01 pH Accuracy ±2% F.S Accuracy TDS/EC/Temperature Meter, Pen Type and Handheld, PPM Meters:
COM-80 TDS / EC Hand Held Meter - Octo Marine
TDS Meter Water Tester
TDS/EC Meter-Green – HoneForest
