The performance of the instrument, in addition to the structure of the instrument itself, and good maintenance is inseparable, PH meter such instruments and the use of the environment often in contact with chemical substances, therefore, reasonable maintenance is even more necessary
1. The input side of the instrument (i.e. the composite electrode socket) must be kept at a high level of cleanliness and the electrode plugs must not be switched off frequently to prevent dust and high humidity ingress.
2. The head of the composite electrode should not be in contact with dirt, if found stained use medical cotton to gently wipe the head of the electrode, or use 0.1 mol/L dilute hydrochloric acid to clean
3. If the head of the composite electrode is cracked or aged (more than one year), it should be replaced by a new electrode, otherwise the reaction will be slow and even cause large measurement errors.
4. When calibrating the instrument with buffer solutions, the reliability of the buffer solution should be ensured, as the low accuracy of the buffer solution will lead to errors in the measurement results.Performing measurements
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