HM Digital COM-100 EC/TDS/TEMP Meter

COM-100 Latest EC and TDS Meter from HM Digital, combination waterproof handheld meter. Accurate and reliable water testing device.
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    £55.74 inc-VAT


    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.

    We are an AUTHORISED DISTRIBUTOR OF HM Digital  Water Testing Equipment in the United Kingdom. The information on this listing is taken directly from the HM Digital website which we are authorised to do by HM Digital

    We hold large stocks of the HM Digital range of products to see our full stock holding here in the UK.


    • 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.

    Technical Information

    • 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 357A)
    • 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)
    Product £ Qty Sub.Tot

    Battery For HM Digital TDS Meter x2 £2.39 inc-VAT   £
    HM Digital TDS and EC Calibration Fluid £7.79 inc-VAT   £

    Spares and Accessories will be added at the special prices Total: £
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