The pH glass membrane, the probe tip, is the sensitive part of your
electrode. If the glass membrane dries out during storage and sometimes
after a rough cleaning procedure gets damaged, you need to restore the hydrated glass layer.
Below are suggestions for three different regeneration methods you can
use. The first method is the easiest to handle and the third method is
the most powerful.
What method you choose to use will depend on your experience and knowledge about the pH electrodes you are using. If it's the first time you regenerate your pH glass electrode, start with the first method. If this not helps and the electrode behaves in an inappropriate way, as a slow and sluggish response, take the next step and try method 2. You still have a problem with the pH electrode? Okay, it's time to try the "final step", method 3.
of pH electrodes usually sell their special solution for regeneration
of glass electrodes. An example of a regeneration solution is a mixture
of hydrochloric acid (HCl) and hydrofluoric acid (HF). For the
appropriate procedure, see the instruction manual for the regeneration
However, general guidelines for using a reactivation solution are:
Be careful when handling a reactivation solution. It is very toxic and aggressive to clothing, skin, and especially eyes.
If your regeneration procedure has been successful, your electrode is now ready for calibration and measurement.
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