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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.
•
Milk deposits
Soak in Hanna
HI 700640
Cleaning Solution for milk deposits for
approximately ½ hour (pH half cell only).
•
Protein
Soak in Hanna
HI 7073
or
HI 8073
Protein Cleaning Solution for 15 minutes.
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 taking 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. The
HI 5313
Reference may be stored with its black cap and Fill hole covered. Rinse
and refill before using. Follow the Preparation Procedure on page 18 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 points of 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.
