HM Digital

ORP-200: Waterproof ORP Meter Ideal for all ORP testing, including anti-oxidant measurement, water purification applications, ionizers, agriculture, aquariums & aquaculture, chlorine monitoring, cooling tower disinfection, environmental testing,...

HM Digital COM-300: Waterproof Professional Series pH/EC/TDS/Temp Meter The COM-300 is a professional grade level pH/EC/TDS/Temp meter ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture,...

Ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee,...

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...

Brand New! The COM-80 is a reliable, economically priced, EC/TDS meter that is perfect for testing applications like hydroponics, gardening, pools, spas, aquariums, reef tanks, water ionizers, drinking water and more.FEATURES  Measures electrical...

Measuring the pH value of water-based solutions is important for various applications. This can be easily done using HM Digital PH-80 pH Hydro Tester. This device is economically priced, and equipped with advanced microprocessor technologies. Cannon...

Discontinued Please See COM-80 HM Digital introduces its new AquaPro series, a line of handheld TDS/EC meters with a sleek design that's perfect for today's modern kitchen. The AquaPro digital water testers are the next generation for today's tech-savvy...