PH meter electrode

PH meter electrode

PH meter electrode is the most critical component of the PH meter, and its structure is precisely designed. It is generally composed of glass membrane, reference electrode, internal reference solution and other parts. The glass membrane is the part that is in direct contact with the measured solution, and it has a selective response to hydrogen ions. The reference electrode provides a stable potential reference, and the internal reference solution ensures the stability of the chemical environment inside the electrode. Its working principle is based on the Nernst equation. When the hydrogen ion concentration on both sides of the glass membrane is different, a potential difference will be generated. By measuring this potential difference, the pH value of the solution can be obtained.