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Take you to understand the quality ph meter digital
The quality ph meter digital measures the PH value of the solution by potentiometric method, so the working mode of the quality ph meter digital, in addition to measuring the PH value of the solution, can also measure the electromotive force of the battery.
The main measuring components of quality ph meter digital are glass electrode and reference electrode. The glass electrode is sensitive to pH, while the potential of the reference electrode is stable. Putting the two electrodes of the quality ph meter digital together in the same solution constitutes a galvanic cell, and the potential of this galvanic cell is the algebraic sum of the potentials of the glass electrode and the reference electrode.
The potential of the reference electrode of the quality ph meter digital is stable, then when the temperature remains stable, the potential change of the galvanic cell composed of the solution and the electrode is only related to the potential of the glass electrode, and the potential of the glass electrode depends on the solution to be tested. Therefore, by measuring the change of the potential, the pH value of the PH solution can be obtained.