Care and Maintenance

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The best way to maximize lifespan of process pH sensors is proper storage and cleaning. The pH sensitive gel layer that forms on the glass membrane must be kept hydrated for proper measurement and response time. Additionally, deposits such as proteins, fats, oils, and scale-like coatings can also create undesirable measurement errors. The articles below detail the best practices for pH sensor maintenance depending on the application.

pH Sensor Storage

The requirements of the pH glass membrane measurement electrode and the electrolyte filled reference electrode must both be considered to determine the best way to store a combination pH sensor.
Illustration of a pH sensor and a beaker labeled 3M KCl for pH electrode storage

pH Sensor Cleaning

Lack of pH sensor cleaning can result in poor accuracy and response time. There are several methods of cleaning depending on the deposits on the membrane glass or the liquid junction.
Sensor Cleaning Set
Hamilton pH Measurement Guide booklet open to Chapter 3, displayed alongside its cover

Download Our pH Measurement Guide

Get a better understanding of pH measurement in Hamilton’s comprehensive pH Measurement Guide.