What do you know about the daily maintenance of pH meters
1. When the composite pH electrode is not in use, it can be fully soaked in 3mol/L potassium chloride solution and must not be soaked with washing liquid or other water-absorbing reagents.
2. Before use, check the bulb on the front end of the glass pH electrode. Under normal circumstances, the pH electrode should be transparent without cracks; the bulb should be filled with solution without air bubbles.
3. When measuring a solution with a high concentration, shorten the measurement time as much as possible, and wash it carefully after use to prevent the measured solution from adhering to the pH electrode and polluting the pH electrode.
4. After cleaning the pH electrode, do not wipe the glass membrane with filter paper, but dry it with filter paper to avoid damage to the glass membrane, prevent cross-contamination, and affect measurement accuracy.
5. Pay attention to the silver-silver chloride internal reference pH electrode of the pH electrode during the measurement. When using, pay attention to gently shake the pH electrode a few times.
6. The pH electrode cannot be used for strong acid, strong alkali or other corrosive solutions.
7. It is strictly forbidden to use in dehydrating medium such as absolute ethanol, potassium dichromate, etc.
