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The Klever shows -С- or “Measurement error”. What is to be done?

If the device shows -С- or “Measurement error” from time to time for a certain sample, it is most likely that the quality of the sample fed does not meet the requirements to sample selection and preparation. Probably, the sample contains a high quantity of bacteria, has increased acidity (over 25 °Т) or is not degassed.

If the device shows -С- or “Measurement error” continuously for any sample, wash the device, as it should be done on a monthly basis (see the Operation Manual, Clause 4.3), pour distilled water into it and take the measurement.

If the problem persists, upload a digital picture of the device and e-mail it to the manufacturer. Later, contact with the manufacturer and find out the cause and the ways of fixing the problem.