What is the function of ph meter electrode protection solution
The electrodes used in the laboratory are all composite electrodes, which have the advantages of being easy to use, not affected by oxidizing or reducing substances, and having a fast equilibrium speed. When in use, remove the rubber sleeve on the electrode filling port and the rubber sleeve at the lower end to maintain the hydraulic pressure difference of the potassium chloride solution in the electrode. The following is a brief introduction to the use and maintenance of electrodes:
1. When the composite electrode is not in use, it can be fully soaked in 3M potassium chloride solution. Do not soak with washing liquid or other water-absorbing agents.
2. Before use, check the bulb at the front end of the glass electrode. Under normal circumstances, the 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 liquid from adhering to the electrode and polluting the electrode.
4. After cleaning the 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 the measurement accuracy.
5. Pay attention to the silver-silver chloride internal reference electrode of the electrode during the measurement. When using, pay attention to gently shake the electrode a few times.
6. The electrode cannot be used in 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.
