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What does 'cell constant' mean?

The cell constant, K, refers to the distance between the two electrodes. Lower cell constants are needed for low conductivity samples (K=0.1) and higher cell constants are required for high conductivity samples (K=10). The cell constant affects the accuracy of the conductivity measurement, so your conductivity meter must know the cell constant to be able to adjust the reading accordingly. The cell constant is either communicated automatically when you connect the sensor, or you need to enter it manually into the meter when you start it up.

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