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Water Testing Meters and Counters

Water Quality EC/TDS, pH and Temperature Testing Meters from HM Digital are handheld and portable for measuring TDS, EC, pH and Temperature for reverse osmosis water filters, water purification systems, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee, agriculture and more are superior in construction and performance, yet made available at a very economic cost.

HM Digital, Inc. is the only manufacturer of economical in-line dual TDS monitors that measure total dissolved solids (TDS) levels of feed and product water lines simultaneously, an effective way to compare rejection rates and gauge reverse osmosis membrane, water filter and water purification performance.

Water Quality EC/TDS/Temperature Testing Meters, Factory Calibrated, ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more.

Water pH/Temperature Testing Meters, Factory Calibrated, ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs and scientific testing, pools and spas, ecology testing, boilers and cooling towers, water treatment, wine, coffee, agriculture and more.


Specialty Horticulture Tools



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HM Digital COM100 Water Quality Testing Meter, Waterproof, Measure EC/TDS, Temperature Tester, IP-67 rating, Factory Calibrated

HM Digital COM100 Water Quality Testing Meter, Waterproof, Measure EC/TDS, Temperature Tester, IP-67 rating, Factory Calibrated, ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers,...

HM Digital COM100 Water Quality Testing Meter, Waterproof, Measure EC/TDS, Temperature Tester, IP-67 rating, Factory Calibrated
HM-Digital-COM100
HM Digital

HM Digital COM80 Hydro Quality Tester Meter, Measures EC/TDS, Temperature Testing, Water Resistant, Factory Calibrated

HM Digital COM80 Hydro Quality Tester Meter, Measures EC/TDS, Temperature Testing, Water Resistant, Factory Calibrated, 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 HM Digital COM80 Hydro Quality...

HM Digital COM80 Hydro Quality Tester Meter, Measures EC/TDS, Temperature Testing, Water Resistant, Factory Calibrated
HM-Digital-COM80
HM Digital

HM Digital PH-200 Water pH Testing Meter, Waterproof, Measure 0-14 pH, Temperature Tester, IP-67 rating, Factory Calibrated

HM Digital PH-200 Water pH Testing Meter, Waterproof, Measure 0-14 pH, Temperature Tester, IP-67 rating, Factory Calibrated pH Meter, for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water...

HM Digital PH-200 Water pH Testing Meter, Waterproof, Measure 0-14 pH, Temperature Tester, IP-67 rating, Factory Calibrated
HM-Digital-PH-200
HM Digital

HM Digital PH-80 Hydro pH Tester Meter, Measures pH, Temperature Testing, Water Resistant, Factory Calibrated

HM Digital PH-80 Hydro pH Tester Meter, Measures pH and Temperature Testing, Water Resistant, Factory Calibrated, economically priced, reliable pH meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more HM Digital PH-80 Hydro pH Tester Meter,...

HM Digital PH-80 Hydro pH Tester Meter, Measures pH, Temperature Testing, Water Resistant, Factory Calibrated
HM-Digital-PH-80
HM Digital

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