Hanna Instruments HI 84432 - Manual (Page 41)

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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 takiing measurements.
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 and there must be no broken insulation on the cable or 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.