Electrode Care and Maintenance
Extend electrode life and maintain response through correct cleaning, hydration, storage and replacement practices.
Practical guidance
Rinse electrodes after use, clean deposits with a compatible cleaning procedure and follow the correct storage method. pH electrodes normally require storage solution rather than pure water. Conductivity cells should be free of oil, scale and bubbles. DO sensors may require membrane and electrolyte service. Industrial sensors need inspection of seals, cables and process fittings.
Recommended routine
- Review the product manual and required standards.
- Inspect the instrument, cables and sensor condition.
- Calibrate at suitable points using fresh standards.
- Rinse and condition the sensor before measuring.
- Allow the reading to stabilise without contaminating the sample.
- Record the result together with temperature and calibration status.
- Clean and store the sensor correctly after use.
Frequently asked questions
How often should an instrument be calibrated?
Calibration frequency depends on sensor stability, application risk, sample type and quality procedure. Critical measurements may require calibration before each batch or shift.
Can the same sensor be used for every sample?
No. Sensor material, range, temperature and chemical compatibility must match the sample and application.
When should a reading be confirmed?
Confirm readings that are unexpected, safety-critical, near a specification limit or inconsistent with process conditions.