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Resistance to Complex Chemical Environment ORP Sensor Electrode Tester
US $ 176-203/Piece
1 Piece
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Bluetooth Water Quality Tester 7 in 1 pH TDS Ec ORP Salinity S. G Temperature pH Meter
US $ 9.6-13.66/pieces
50 pieces
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High Precion 4 in 1 pH/ORP/H2/Temp Meter Digital Hydrogen Tester
US $ 8.95-9.56/pieces
5 pieces
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BLE-C600 Digital Handheld Smart Blue Tooth 7 in 1 Water Tester Pen
US $ 19.3-21.5/Piece
1 Piece
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Digital Salt pH Meter CT-3081 Waterproof Pocket Pen Type Salinity Tester
US $ 22-30.38/pieces
1 pieces
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Infitek High-Performance Blue Tooth Water Quality ORP Tester
US $ 130-180/Piece
1 Piece
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Meter 3-in-1 Long-Term Monitoring Water Temperature & Orp Tester
US $ 1/Piece
1 Piece
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Biobase Cn Portable Conductivity TDS Salinity Meter pH Tester
US $ 90-180/Piece
1 Piece
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SCITEK Pocket Salinity Tester Two modes can be switched Salinity Tester
US $ 50-79/unit
1 unit
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Biobase Waterproof Pocket pH Tester pH10f with Surface Probe
US $ 42-82/Piece
1 Piece
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SCITEK Portable Pocket PH Tester Reset Function Wireless Pocket Digital PH Meter
US $ 105-140/unit
1 unit
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