Be sure to rinse your electrode in a waste beaker that is different from the beaker you will be calibrating in. [2] X Research source Avoid rubbing the electrode as it has a sensitive membrane around it. If you find the electrode to be particularly dirty consult your operating manual for recommended cleaning solutions.
Check with your pH meter manufacturer, or current educational or professional institution, about acquiring pH buffer solutions. Buffers should be kept in a beaker for no longer than two hours. Discard the buffer when you are finished. Do not return it to its original container.
Allow the pH reading to stabilize before letting it sit for approximately 1-2 minutes.
Although not necessary, if you stir your buffer before measuring be sure to stir all other buffers and samples in the same way.
Consult your operation manual for optimal storage practices for your specific pH meter.
