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Professional Waterproof pH/Temp Meter
Very reliable waterproof pH meter measures with an accuracy: of +/- 0.02 pH.
HM Digital, Inc.
Established in 1987, HM Digital, Inc. (formerly known as Heemang Electronics) is an original equipment manufacturer (OEM) that has been recognized worldwide for providing the best values in water testing instrumentation, especially the increasingly popular TDS meter.