Skip to content

HM Digital COM-100 Waterproof EC/TDS/Temp Combo Meter

Original price $75.99 - Original price $75.99
Original price
$75.99 - $75.99
Current price $75.99

The COM-100 is a professional-level EC/TDS meter at an unbeatable price. It is 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.

  • Measures electrical conductivity (EC), total dissolved solids (TDS), salinity, and temperature
  • Includes: Cap, batteries, and lanyard
  • Large, easy-to-read LCD screen which includes simultaneous temperature reading
  • Three different non-linear EC-to-TDS conversion factors (KCl, 442TM, NaCl
  • Automatic Temperature Compensation (ATC) using three temperature coefficient
  • Waterproof housing (IP67 rating)
  • Digital Calibration (push button) to any point within the meter's range
  • Auto-off function, data-hold function, and low-battery indicator
  • Operates on (3) 1.5V button cell batteries (included)
  • Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches)
  • Weight: 90.7 g (3.2 oz)
  • Replaceable sensor
  • 1-year warranty

  • EC Range: 0-9990 µS; 0-9.99 mS
    TDS Range: 0-8560 ppm (mg/L); 0-8.56 ppt
    Temperature Range: 0-80 °C/32-176 °F
    Resolution: 0-99: 0.1 µS/ppm/mS/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
    Calibration: Digital calibration by push button
    Probe: Detachable platinum electrodes
    Housing: IP-67 Waterproof (submersible; floats)
    Power source: 3 x 1.5V button cell batteries (included) (model LR44 or equivalent)
    Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches)
    Weight: 90.7 g (3.2 oz)

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare