Hanna-instruments HI 84431 Manual do Utilizador descarregar pdf (Página 41)

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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