HM Digital Inc. formerly known as Heemang Electronics is an original equipment manufacturer established in 1987. It is popular for its TDS meter that has been recognized worldwide. HM Digital is well known globally for providing its customers the best values in water testing instrumentation.

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HM Digital ASP-20 unit comes with the following:

  • Twenty (20) packs of Assorted Solutions
  • Five (5) 20 ml packets of pH 4 buffer
  • Five (5) 20 ml packets of pH 7 buffer
  • Five (5) 20 ml packets pH storage solution
  • Five (5) 20 ml packets EC/TDS calibration solution
Price incl. GST



COM-100: Waterproof Professional Series EC/TDS Meter

The HM Digital COM-100 is one of the EC/TDS/Temp meter at a professional grade level perfect for all water quality testing, water treatment, ecology testing, labs & scientific testing, colloidal silver, wastewater regulation, water purification applications, pools & spas, hydroponics, aquaculture.

Price incl. GST
COM-300 - HM Digital TDS Meter Australia | HM DigitalOut of stock



COM-300: Waterproof Professional Series pH/EC/TDS/Temp Meter

The HM Digital COM-300 is one of the professional grade level pH/EC/TDS/Temp meters perfect for all water quality testing, water purification applications, water treatment, wastewater regulation, aquaculture, colloidal silver, labs & scientific testing, hydroponics, pools & spas,  boilers & cooling towers, ecology testing and more.

Price incl. GST



The FLM-3 is a consumer flow meter perfect for under the sink monitoring of the flow that has passed through your filtration (RO/DI) system.

Price incl. GST



PH-200: Waterproof Professional Series pH/Temperature Meter

HM Digital PH-200 is a professional temperature meter perfect for all pH testing water. It comes with an advanced microprocessor that provides highly accurate dependable readings in various applications like wastewater regulation, hydroponics, purification applications, pools & spas, ecology testing, boilers & cooling towers  ,labs & scientific testing, aquaculture, agriculture. colloidal silver, water treatment, coffee and wine.

Prices incl. GST




HM Digital PH-P4

HM Digital PH-P4 is composed of 20 packs of pH p4 buffer solution and 20 packets of 20 ml pH 4 buffer.

Price incl. GST



HM Digital PH-P7

The HM Digital PH-P7 unit that comes with 20 packs of pH 7 Buffer solution and 20 packets of 20 ml pH 7 buffer.

Price incl. GST




The HM Digital PH-PSTOR is an electrode storage solution that comprises of 20 pack pH storage solution and 20 packets of 20 ml potassium chloride (KCl) storage solution.

Price incl. GST



PH-STOR: pH Electrode Storage Solution

PH storage solution for HM Digital’s PH-200 / PH-80 as well as other brands of pH meters. Always make sure your sensor is kept in an electrode storage solution. If dry, refill the pH meter cap with the PH-STOR storage solution. The sponge should be moist (not soaking wet).

Price incl. GST



PSC-150: Extended Range EC/TDS Controller

New controller includes extended range, digital calibration, on-screen temperature and tri-color display.

Price incl. GST



The HM Digital RCM 1000 BT is a Coffee Refractometer that monitors Brix, TDS, and temperature, in order to effectively measure coffee concentration. It features water resistance, allowing it to be washed with flowing water. It can store up to 20 measurements and has bluetooth technology, allowing for easy data storing and reading.

Price incl. GST



SM-1: In-line Single TDS Monitor

HM Digital SM-1 has an easy-to-read single line TDS monitor providing a digital readout. The SM-1 is perfect for any water filtration system including reverse osmosis systems, coolers and much more.

Price incl. GST
Out of stock



TDS/EC Sensor Probe for Panel Mounted Controllers

  • TDS/EC Sensor Probe for panel mounted controllers
  • Compatible With HM Digital Panel Mount Controllers
  • Durable plastic probe
  • Stainless steel sensors
  • High quality construction
Price incl. GST



COM-100 Replacement Probe

  • (Replacement EC/TDS Sensor for COM-100)
  • Measures Conductivity and TDS
  • Measures Temperature
Price incl. GST



HM-500 TDS/EC Replacement Probe

  • (Replacement EC/TDS sensor for HM-500)
  • Measures Conductivity and TDS
  • Measures Temperature
  • 1 Year warranty
Price incl. GST



PH-200 Replacement Probe

  • (Replacement pH/Temp Sensor for PH-200)
  • Measures pH and Temperature
Price incl. GST



HM-500 pH Replacement Probe

  • (Replacement pH sensor for HM-500)
  • Measures pH
  • 6 Month Warranty
Price incl. GST



HM Digital TRM-1: Triple In-Line TDS Monitor

HM Digital TRM-1 is a unique TDS monitoring that offers the user a 3-point contact during the process of filtration. This Triple In-Line TDS monitor allows checking for TDS levels at three points such as with multiple points in an RO system, or DI/RO (deionization / reverse osmosis) and many more.

Price incl. GST