pH sensor troubleshooting, diagnosis and treatment
pH sensor troubleshooting is the key to successful pH analysis. Since the pH sensor is the only part of the analytical instrument that is in direct contact with the sample, its selection and maintenance (and therefore sensitivity) has the strongest influence on precise and accurate measurements. However, a sensor that has been correctly selected and that has been working properly may nevertheless suddenly start performing badly. In this article we will help you to identify possible reasons for this and suggest a number of procedures for restoring the pH sensor to its original performance.
The following topics and more is covered in this paper:
- Diagnostic procedure preparation
- Glass membrane
- Regeneration procedure
- Reference diaphragm
- Cleaning procedures