Transmitter 9135 - pH/redox measurement
Page 6
The half-cell potential εB, of the reference electrode
will strongly influence the potential E of the measuring
chain. To remove this influence the potential of the
measuring electrode can be related to the hydrogen
electrode. If εB is the half-cell potential of the reference
electrode used, the calculation is made by
ε (H) = ε + ε R
Such standardized redox potentials to some extent
provide information on the oxidizing or reducing power
of a redox system. Increasing positive values express
an increasing power of oxidation. The more negative
the potential, the stronger the reducing power will be.
The range of practical interest is between +1500 and
-1000 mV.
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