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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.
Our products are co-designed between our Los Angeles office and our ISO-9001-certified factory in Seoul, Korea, producing high quality water testing and monitoring equipment for all types of water treatment and purification systems, including reverse osmosis (RO), that are sold in over 50 countries throughout the world. We also offer OEM services for customized products and private labeling.
In 2000, the US office was established in Los Angeles, CA to provide marketing, customer service and distribution for the Americas, Europe, Africa, the Middle East, Australia and South Asia. We strive to always provide the best values as well as the utmost care in promptly serving our distributors and customers.
HM Digital™ pH Meter Model PH-80 Resolution: pH 0.1 pH, 0.00–14.0 pH. Accurate to +/-0.1 pH. Hold button and auto shut-off. Automatic calibration: Auto-ranging to 4, 7 or 10 pH. Very reliable and long lasting. Low battery indicator. Clear cap to notice
HM Digital™ pH/TDS/EC/Temp Meter Model COM-300 The COM-300 is an advanced waterproof combo meter with superior accuracy. The meter measures four parameters: pH, electrical conductivity (EC), total dissolved solids (TDS) and temperature. Features includ
Ideal for commercial use, the TDS-3 includes a carrying case with belt clip. It is highly efficient and accurate due to its advanced microprocessor technology. It features a measurement range of 0-9990 ppm. From 0-999 ppm, the resolution is in increments
HM Digital™ Waterproof pH Meter Model PH-200 Measures pH and temperature. Auto-ranging three point calibration with digital fine tuning. pH buffer 4 solution is in a sponge embedded in a clear cap. Measurement range: 0–14 pH with a waterproof housing.
HM Digital™ EC/TDS HydroTester Model COM-80 The COM-80 is an economically priced, reliable EC/TDS meter that is ideal for testing applications such as hydroponics, gardening, pools, spas, aquariums, reef tanks, water ionizers, drinking water and more.