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KETOTEK Water Quality Test Meter, PH Meter TDS Meter 2 in 1 Kit with 0-16.00 ph and 0-9990 ppm Measure Range for Hydroponics, Aquariums, Drinking Water, RO System, Fishpond and Swimming Pool…:
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Digital pH/TDS Meter with ATC pH Tester, 3 in 1 0.01 Resolution High Accuracy pH
