Preparation and Reproducibility of the Thermal-Electrolytic Silver-Silver Chloride Electrode

Abstract

Preparation of the thermal‐electrolytic electrode for precision use is described. A reproducibility of the electrode of ±0.1 mv can be achieved readily by this procedure. Freshly prepared electrodes are evaluated relative to equilibrated electrodes selected as reference standards. With care, reference standards corresponding to an electrode in the ground energy state, and of constant potential (±0.005 mv) for periods of several months can be attained. It is suggested that the difference in the values of the standard potential of this electrode may be attributed in part to the limited reproducibility of these electrodes. The importance of the porosity, amount of , and color, relative to the attainment of stable electrodes that equilibrate rapidly, is considered.