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Digital PH Meter, 2-in-1 Portable PH Water Quality Test Meter with - 50°C-70°C (- 58°F-158°F) Temperature Measurement, 0.00-14.00PH PH Measurement for Drinking Water, Pool, Hydroponics, Aquarium.(US)
Digital PH Meter, PH Meter 0.01 PH High Accuracy Water Quality Tester with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium Water PH Tester Design with ATC: Amazon.com: Industrial &
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