Electrode conditioning and maintenance, Ph cleaning procedure, Storage procedure – Hanna Instruments HI 84431 User Manual
Page 41: Periodic maintenance, General
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ELECTRODE CONDITIONING AND MAINTENANCE
pH CLEANING PROCEDURE
•
General
Soak in Hanna HI 7061 or HI 8061 General Cleaning Solution for
approximately ½ hour.
IMPORTANT: After performing any of the cleaning procedures, rinse the electrode thoroughly
with distilled or deionized water and soak the electrode in HI 70300 or HI 80300 Storage
Solution for at least 1 hour before use. Recalibrate electrode before using.
.
STORAGE PROCEDURE
To assure a quick response time, the glass bulb should be kept moist and not allowed to dry out.
Replace the solution in the protective cap with a few drops of HI 70300 or HI 80300 Storage
Solution. Follow the Preparation Procedure section before taking measurements.
Note: NEVER STORE THE pH ELECTRODE IN DISTILLED OR DEIONIZED WATER.
PERIODIC MAINTENANCE
Inspect the electrodes and the cables. The cable used for connection to the instrument must be
intact. There should be no cracks on the electrode stem or bulb. Connectors must be perfectly
clean and dry. If any scratches or cracks are present, replace the electrode. Rinse off any salt
deposits with water.
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