The ZT-2 is the first of HM Digital's new HMD line. It's a low-cost TDS meter that's perfect for those with multiple systems. Though inexpensive, this meter does not skimp on quality, features and read more ››
The HM-200 is a versatile portable pH/EC/TDS/Temp monitor ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, colloidal silver, labs read more ››
he COM-80 is easily the most advanced economically priced, reliable EC/TDS meter on the market. With its versatility and durability, it is ideal for testing applications such as hydroponics & read more ››
The only handheld TDS meter / EC meter with full scale digital calibration. A water tester that is perfect for both consumer or commercial use. Ideal for all water quality testing, water purification read more ››
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