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pH Electrode Cleaning Guide

Date: 11-09-2023

In order to maintain accuracy and prolong the life of your pH electrode, it’s essential that cleaning is a regular part of your routine!

We’ve got a quick cleaning guide to help you with the process.

Rinse with Distilled Water

  • After each use, rinse the pH electrode with distilled water to remove any residual sample or debris
  • Gently swirl or soak the electrode in the water to rinse thouroughly

Soak in Electrode Cleaning Solution

  • Periodically, depending on how often you use your electrode and the type of samples you test, it's necessary to soak the electrode in some cleaning solution.
  • The formula is specifically designed to remove stubborn deposits, oils and other residues that may build up on the surface.

Rinse again in Distilled Water

Store in Electrode Storage Solution

  • Essential for the hydration of your electrode to maintain its performance.
  • It helps the glass membrane from drying out and ensures accurate and stable readings the next time the electrode is used.
  • If you don't have access to the storage solution, you can also use a pH4 or pH7 buffer solution.


Electrode storage solutions and electrode cleaning solutions are typically made from pH buffer solutions with added preservatives to inhibit microbial growth and ensure long-term stability.


Why does the end of the electrode have to be wet?

Keeping the tip of the pH probe wet is essential because it maintains the hydrated state of the sensitive glass membrane. The hydrated membrane allows for efficient ion exchange between the sample and the electrode, ensuring accurate pH measurements. If the tip of the electrode dries out, the glass membrane can become damaged, leading to a slower response time, inaccurate readings, or even permanent damage to the electrode.