History
The first studies of glass electrodes (GE) found different sensitivities of different glasses to change of the medium's acidity (pH), due to effects of the alkali metal ions.
- 1906 — M. Cramer determined that the electric potential that arises between parts of the fluid, located on opposite sides of the glass membrane is proportional to the concentration of acid (hydrogen ion concentration).
- 1909 — S. P. L. Sørensen introduced the concept of pH.
- 1909 — F. Haber and Z. Klemensiewicz publicized on January 28, 1909 results of their research on the glass electrode in The Society of Chemistry in Karlsruhe (first publication — The Journal of Physical Chemistry by W. Ostwald and J. H. van 't Hoff) — 1909).
- 1922 — W. S. Hughes showed that the alkali-silicate GE are similar to hydrogen electrode, reversible with respect to H+.
Read more about this topic: Glass Electrode
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