The technique of glass electrode measurements

Abstract

IN the course of an investigation into the value of the glass electrode as a means of making continuous records of the hydrogen ion concentration of circulating blood, it was found, in the preliminary experiments in which estimations were made on single samples, that there were several sources of serious error. The difficulties encountered in devising a satisfactory apparatus for measuring glass cell potentials have been overcome, and a suitable form of thermionic valve electrometer has been evolved [Platt and Winfield, 1933]. The present paper is concerned with technical details which must be carefully considered before accurate results can be obtained consistently.