How do you use a pH meter?

Measuring guide

 Before taking any measurements, check that the calibration has been done.


1) Pour a sufficient volume of the sample solution into a clean container so that the liquid junction of the electrode (diaphragm) is immersed in the sample.
2) Make sure that the sample’s temperature is known or that it is measured during the determination of the pH by an integrated or separate thermal sensor.
4) Gently stir the sample and immerse the pH electrode in the solution.
5) Press the pH meter’s measurement button and wait for a stable output value.
6) Remove the electrode from the solution and rinse with distilled or demineralized water.

After the measurement, rinse the electrode with distilled or demineralized water and store it in a cap filled of reference electrolyte.

Influence of the environment?

On the measurement

Effect of temperature on the pH measurement?

        Effect on the dissociation of the molecule.

        Effect on electrode response.

Effect of ionic strength on pH measurement?

Effect of the presence of solvent on pH measurement?

Concerning the risks of electrode clogging

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