Conductivity meter

Conductivity Meters

Regular price £214.00 £0.00 Unit price per

Comes with two plastic pint-sized bottles of EC-1413-P conductivity calibration solution. 

What are conductivity meters and where can they be used?

A conductivity meter measures the amount of electrical current or conductance in a solution. Common in any water treatment solution, conductivity meters monitor the amount of dissolved salts in the water. They have multiple applications in hydroponics, aquaponics and freshwater systems, as well as being a way to measure changes in many process systems including cooling towers and wastewater procedures.

How does a conductivity meter work?

The EC400 conductivity meter uses a multi-range sensor to measure conductivity, total dissolved solids (TDS), salinity and temperature in water. It is equipped with a handheld probe to carry out on-site measurements, and once this has been placed in the liquid, the conductivity meter will apply voltage between two electrodes in the probe. Electrical resistance from the solution causes a drop in voltage, which is interpreted by the conductivity meter and converted to the appropriate unit of measurement, while also indicating the TDS that can pass through a glass fibre filter.

As the conductivity of a solution is temperature dependent, it is important that the conductivity meter is temperature compensated, or has been calibrated at the same time that the solution is measured. To ensure that this is the case, the EC 400 meter comes with two plastic pint-sized bottles of EC-1413-P conductivity calibration solution. By automatically compensating the temperature, accuracy is maintained even in substances where the temperature may have caused measurement fluctuations.

What are the benefits of using a conductivity meter?

Featuring the latest microprocessor chip and patented sensor technology, the EC meter enables the simultaneous measurement of six different units. Testing is fast, accurate and repeatable, with an autoranging meter that automatically selects the correct range for the solution under test. This is able to measure a range of aqueous solutions, including tap water and wastewater.

With an internal memory that can store up to 25 labelled readings to allow for easy recall, the conductivity meter comes with an adjustable conductivity TDS to ratio factor from 0.4 to 1.0 and self-calibration upon power up. It also features a waterproof design that meets IP54 standards, as well as a low battery indicator and a data hold function that temporarily stores the last unit of measurement taken on the screen.

    Technical information regarding the conductivity meter is indicated in the table below:

    Conductivity range

    TDS/salinity range

    Fluoride range

    Temperature range

    Max resolution

    Basic accuracy



    0 to 199.9 µS, 200 to 1999 µS, 2.00 to 19.99 mS

    0 to 99.9 ppm (mg/l), 100 to 999 ppm (mg / l)

    1.00 to 9.99 ppt (g/l)

    0 to 65 °C

    0.1 µS, 0.1 ppm (mg / l), 0.01 pH, 0.1 °C

    ± 2% full scale, ± 0.01 pH, ± 1 °C

    35.6 mm x 172.7 mm x 40.6 mm



    To calibrate the EC meter, wash the probes or electrodes in distilled water before soaking it in the standard solution. The conductivity measurements are then used to determine the amount of dissolved ions present in a water sample, which in turn indicates the quality of the water.

    Click here to access the data sheet for EC400.


    The EC400 conductivity meter is available for purchase via credit/debit card, Apple Pay or Google Pay. Please contact us if you would like to pay by bank transfer or raise a PO.

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    If you would like to receive further information on the conductivity meter, or want to find out how SOCOTEC can support you with additional Water Treatment & Hygiene services, click here or get in touch.