Electrode that responds to one, or more than one, species in the solution being investigated, with no appreciable change of bulk solution composition during the measurement.
IndicatorElectrode
[2,"smw-datavalue-wikipage-property-invalid-title","HasComment","If processes of interest occur both at the anode and the cathode of a cell (as in differential amperometry or controlled-current potentiometric titration with two indicator electrodes), the cell should be said to comprise two indicator or working electrodes.@en"]