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1 Piece Instant Read Digital Water Testing Kits For Drinking Water Tap Well Ro/Di 3 In 1 Tds Ec Temperature Meter

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Soil Ph Meter Tester EC Meter for Soil PH TDS CF Sunlight Moisture Humidity Garden Temp Soil Moisture Sensor Gauge Optional

Five-in-One Salinity Meter: Multifunctional Water Quality Test Pen for Fish Tanks

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3 In1 Portable Handheld Digital Ph Meter/Lcd Tds Ec Water Purity Ppm Tester Pen

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TDS and pH Water Quality Test Pen for Household Use: High Precision EC Conductivity Measurement Instrument

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