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6.3. ELECTRODE CARE & MAINTENANCE
Calibrating & Conditioning
Maintaining a pH electrode is critical to ensure proper and reliable
measurements.
Frequent 2- or 3-point calibrations are recommended to ensure
accurate and repeatable results.
Prior to using the electrode for the first time
1. Remove the protective cap. Do not be alarmed if salts deposits
are present, this is normal. Rinse the electrode with distilled
or deionized water.
2. Place the electrode in a beaker containing MA9016 Cleaning
solution for a minimum of 30 minutes.
Note: Do not condition a pH electrode in distilled or deionized
water as this will damage the glass membrane.
3. After conditioning, rinse the sensor with distilled or deionized
water.
Note: To ensure quick response and avoid cross‑contamination,
rinse the electrode tip with the solution to be tested before
measurement.
Best practice when handling an electrode
Electrodes should always be rinsed between samples with
distilled or deionized water.
Do not wipe an electrode as wiping can cause erroneous
readings due to static charges.
Blot the end of the electrode with lint-free paper.
Storage
To minimize clogging and ensure quick response time, the glass
bulb and the junction should be kept hydrated.
Add a few drops of MA9015 Storage solution to the protective cap.
Replace the storage cap when the probe is not in use.
Note: Never store the probe in distilled or deionized water.
GENERAL OPERATIONS 15
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