Generic Testeur de PH numérique LCD 0.01, haute précision, pour

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5-in-1 pH Meter: GOTMEET PH meter can measure pH, TDS(ppm), EC(Conductivity), Salinity(ppt), and Temperature with high precision at the same time. We

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BEFORE USE: Put the included potassium chloride powder into 20ml of pure water and mix well. Then put the probe into the solution for 24 hours, take

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PH Meter Digital Water Tester, 0.01High Accuracy Water Quality Tester Pen with 0-14 PH Measurement Range for Drinking Water, Plant, Swimming Pool: : Industrial & Scientific

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