HM Digital COM-100 Deluxe Handheld EC/TDS Meter



COM-100: Waterproof Professional Series EC/TDS Meter

The COM-100 is a professional grade level EC/TDS/Temp meter ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, 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.

  • UPGRADED: Four scales: µS, mS, ppm 0.5 (NaCl) Scale & 0.7 (442™) Scale

  • Automatic Temperature Compensation (ATC) using three temperature coefficients

  • Waterproof housing (IP-67 rating)

  • 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.

  • UPGRADED: Includes translucent cap, 2 (AAA) batteries and lanyard.

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