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pH Monitor Digital pH Meter&Temperature Meter Water Quality Tester with ATC and Automatic Calibration Function, pH Tester for hydroponics, Aquarium, Pools, etc.: : Industrial & Scientific

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pH Monitor Digital pH Meter&Temperature Meter Water Quality Tester with ATC and Automatic Calibration Function, pH Tester for hydroponics, Aquarium, Pools, etc.: : Industrial & Scientific