Various laboratory water quality testing instruments are mainly used according to water quality detection in different fields. The water hardness tester is used to measure the hardness of calcium and magnesium ions, which is an important indicator of water quality.
When using a laboratory water hardness tester to test water samples, you should pay attention to the following aspects:
1. When testing the sample solution, the electrode should be cleaned and dry.
2. The containers for dilute solution and concentrated solution should be separated and cannot be mixed. In the test, try to measure the dilute solution first and then the concentrated solution.
3. Calibration is usually required before the test, but if the test interval is short, it does not require calibration, or immerse the electrode into the calibration solution similar to the test solution, if the displayed value is within the error range, there is no need to calibrate.
4. The electrode sensitive membrane may become turbid and whitish after use. This is normal.
5. If you find that the sensitive film of the electrode measuring head is very concave during use, loosen the measuring head and then tighten it, and then shake the electrode a few times to remove air bubbles.
6. After use, the electrode should be washed and dried, then put on the electrode cover.