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.
Accurate and reliable pH and EC meters from Bluelab, ETI, HM Digital, Eutech and meter calibration solutions and pH adjustment acid's.
Keeping both pH and EC (nutrient strength) levels consistent will enhance every aspect of plant growth and yield. Nutrient strength and pH management information can be found in our FAQ pages.
The HM Digital PH-200 high end Combo pH and Temperature meter. This quality pH meter has a resolution of pH 0.01/ 0.00 - 14.0pH ...More
The HM Digital COM-100 high end Combo EC and Temperature meter. This quality EC meter measures EC, TDS and temperature and featu...More
Replacement HM-Digital EC Sensor for the HM-Digital EC and Temperature Combo Meter More
Replacement HM-Digital pH Sensor for the HM Digital PH-200 high end Combo pH and Temperature meter. More