PH meter (acidity meter) electrode storage and maintenance methods
ph meter (acidity meter) electrode storage and maintenance methods
ph meter (acidity meter) electrode should be stored:
Please store the electrode in 3mol/L potassium chloride solution (3M KCl) when not in use; it can be stored in pH7.00 buffer solution for a short time. Drying or immersing the pH meter (acidity meter) electrode in distilled water for a long time will shorten the service life of the electrode.
ph meter (acidity meter) electrode maintenance method:
After using the pH meter (acidity meter) electrode for a period of time, if you find that the slope becomes lower and the response speed becomes slower, you can try the following methods.
1. If the measured sample contains protein, use pepsin/hydrochloric acid washing solution (ME51340068) to clean the electrode membrane.
2. If the measured sample is oily/organic liquid, it can be washed with acetone or ethanol.
3. If the junction of the pH meter (acidity meter) electrode is found to be dirty and black, use mercaptan cleaning solution (ME51340070) to clean the junction.
4. Activate the electrode membrane.
Activation method: Soak in ph meter (acidity meter) electrode regeneration solution (ME51340073) for 30 seconds, then soak in 3mol/L KCl solution for 5 hours
PH meter classification
According to the needs of production and life, people have scientifically researched and produced many types of pH meters and acidity meters:
1. According to the measurement accuracy, it can be divided into 0.2 grade PH meter, 0.1 grade PH meter, acidity meter, 0.01 grade PH meter, acidity meter or higher precision PH meter, acidity meter
2. According to the volume of the instrument, there are pen type PH meter, acidity meter (mini PH meter, acidity meter), portable PH meter, acid-base meter, desktop PH meter,
3. On-line PH meter and acidity meter with online continuous monitoring and measurement.
4. According to the requirements of use: pen-type PH meter, acidity meter (mini PH meter) and portable PH meter, the acidity meter is usually brought to the scene by the testing personnel for testing.
5. Select the pH meter and the accuracy level of the acidity meter is determined according to the accuracy required by the user for measurement, and then choose various shapes of pH meters and acidity meters according to the convenience of the user.
