HM Digital

COM-100 Waterproof EC/TDS Meter

In stock
Out of stock

Discontinued by Bulk Reef Supply
- +

Professional Grade Water Testing

Measure the electrical conductivity, total dissolved solids, and temperature with the HM Digital COM-100 Waterproof Meter.

  • Automatic Temperature Compensation (ATC)
  • IP-67 Waterproof Housing
  • Large LCD Screen
  • Auto-Off 
  • Low-Battery Indicator
  • Digital Calibration
  • Factory Calibration


Conductivity Meters are ideal for many different water applications like reverse osmosis water purity, wastewater regulation, aquaculture, more. The large LCD display lets you quickly see the conductivity reading along with the temperature of the water. Along with a waterproof housing and the large buttons, you can use the meter with wet hands, or even in extremely humid environments.



EC Range: 0 – 9990 µS; 0 – 9.99 mS

TDS Range: 0 – 8560 ppm (0.7 Scale); 0 – 8.56 ppt (0.7 Scale)

0 – 5000 ppm (0.5 Scale); 0-8.56 ppt (0.5 Scale)

Temperature Range: 0-55 °C; 32-130°F

Resolution: 0-99: 0.1 µS/ppm/ 0.01mS/ppt; 100-999: 1 µS/ppm; 1000-9990: 10 µS/ppm. Temp. resolution is 0.1 °C/F

Accuracy: +/- 2%

EC to TDS Conversion Factor: Non-linear conversions for KCl, 442TM or NaCl solutions, selected by the user.

Probe: Detachable platinum electrodes

Housing: IP-67 Waterproof (submersible; floats)


What’s Included?

COM-100 EC/TDS Meter Pen

Translucent Cap

2 (AAA) Batteries

More Information
UPC 891144000007
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