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EZ-9901 4/3 in 1 Digital PH Meter TDS/Temp/EC 0.01 Ph Water Quality Tester Pen Conductivity Detector Monitor Purity Measure Tool

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【4-in-1 pH Meter】This pH meter has a four-in-one function, which can measure EC, pH, TDS and TEMP with high precision at the same time. All-round

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China PH Meter Professional 3 in 1 Multi-parameter Water Quality Tester Pen Type PH EC TEMP Acidometer With Backlight Suppliers, Manufacturers, Factory - YINMIK