Can I put the probe directly in soil?

            No, Ion Selective electrodes can only work in liquid, they are potentiometric and work by measuring the potential difference between the charge built up as a result of free ions in solution against the fixed potential of the reference electrode also submerged in the same solution.

            To measure soil, please refer to the section on soil in these FAQs
            Updated: 14 Jan 2018 08:02 PM
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