Definitions
Potentiometers - Definitions and general principles

Potentiometry is an analytical method that links a measurement of electrode potential to the activity of a species in solution. The corresponding electrode is called an indicator electrode.

The indicator electrode (of potential E_ind), chosen according to the nature of the solute to be determined, is included in a galvanic chain comprising a reference electrode (of potential E_ref ) and one or two electrolytes. Depending on whether there are one or two electrolytes, the potentiometric chain can be written :

or

The...