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  9. PH Electrodes

PH Electrodes

The pH measurement of an acidic, neutral, basic solution is based on the potential difference between a glass electrode and a reference electrode (Hg, Hg / HgO or Ag / AgCl). This signal is proportional to the activity of the H + ions, according to Nernst’s law.

The combined pH electrode brings together, in one body, a glass electrode and a reference electrode.