METHOD FOR MEASURING IONIC CONCENTRATIONS

摘要

A method of measuring ion concentrations in solutions comprises using at least two ion sensitive test electrodes in the solution to be measured, the test electrodes having different sensitivities only in respect of the ion or ion mixture to be measured, setting the operating point of the test electrodes by means of at least one common reference electrode, and evaluating the signals of the test electrodes to produce a measurement result essentially independent of the properties of the reference and test electrodes which would interfere with accurate measurement. The invention also includes apparatus suitable for carrying out the method.