Photo 1 of TDS Meter Digital Water Tester - Hofun TDS, EC & Temperature Meter 3 in 1, 0-9999 ppm Accurate, PPM Meter for Drinking Water Test, Coffee, Swimming Pool, Aquarium, RO/DI System, Hydroponics

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Photo 1 of TDS Meter Digital Water Tester - Hofun TDS, EC & Temperature Meter 3 in 1, 0-9999 ppm Accurate, PPM Meter for Drinking Water Test, Coffee, Swimming Pool, Aquarium, RO/DI System, Hydroponics Photo 2 of TDS Meter Digital Water Tester - Hofun TDS, EC & Temperature Meter 3 in 1, 0-9999 ppm Accurate, PPM Meter for Drinking Water Test, Coffee, Swimming Pool, Aquarium, RO/DI System, Hydroponics