About oxidation-reduction potential : Single electrode potential of reference electrode

The ORP measured with reference to the reference electrode should be converted to the hydrogen reference. Since the unipolar potential of the reference electrode always has a constant potential with respect to the hydrogen electrode, Eh is measured by adding that value. The unipolar potentials of the reference electrodes for each temperature are shown in Table 1.
In actual ORP measurement, actual measurement values that are not converted into hydrogen standards may be used, but depending on the user's judgment whether to use them.