YIERYI Digital Temp CL ORP EC TDS PH Meter, Bluetooth Water Quality Tester for Swimming Pool

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Yieryi Portable Ph Meter C-100 5 In 1 Tds/ec/ Salinity/s.g./temperature Water Testing Tools Lcd Digital Water Quality Test Pen - Ph Meters - AliExpress

【6 in 1 Meter with Bluetooth】 Powered by the mobile App, professional measurement of pH, ORP, Chlorine, EC, TDS, and Temp. suitable for swimming pool

YIERYI Digital Temp CL ORP EC TDS PH Meter, Bluetooth Water Quality Tester for Swimming Pool

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PH Meter 7 in 1 Temp ORP EC TDS Salinity S.G Online Blue Tooth Water Quality Tester pen Digital analysis Aquarium - AliExpress

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