• HM COM-100: Waterproof EC / TDS / Temp Combo Meter

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

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


-Measures electrical conductivity (EC), total dissolved solids (TDS), salinity and temperature.

-UPGRADED: Four scales: µS, mS, ppm, ppt (mS and ppt are new)

-Three different non-linear EC-to-TDS conversion factors (KCl, 442TM, NaCl).

-Automatic Temperature Compensation (ATC) using three temperature coefficients

-Waterproof housing (IP-67 rating)

-Measurement Range: 0-9990 µS; 0-8560 ppm; 0-9.99 mS; 0-8.56 ppt

-Digital Calibration (push button) to any point within the meter's range

-Auto-off function, data-hold function and low-battery indicator

-Display: large and easy-to-read LCD screen includes simultaneous temperature reading.

-Replaceable Sensor (model SP-C1)

-Factory Calibrated: The COM-100 meter is calibrated with a 1413 µS solution. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver.

-Includes a cap, batteries and lanyard.

-See how the COM-100 stacks up against the competition.

-Need help deciding which meter is right for you?  View our TDS/EC Meter Selection Guide. 


-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: 90.7g (3.2 oz)

Write a review

Note: HTML is not translated!
    Bad           Good

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

  • Product Code: HM COM-100: Waterproof EC / TDS / Temp Combo Meter
  • Availability: Must be customer to view