Hanna Instruments HI 84500 - Manual (Page 33)

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If the bulb and/or junction is dry, soak the electrode in HI 70300L Storage Solution for at least
one hour.
If the fill solution (electrolyte) is more than 2½ cm (1”) below the fill hole, add
HI 7082 3.5M
KCl Electrolyte Solution.
For faster response, unscrew the fill hole screw during measurements.
STORAGE PROCEDURE
To minimize clogging and assure a quick response time, the glass bulb and junction of the
electrode should be kept moist and not allowed to dry out.
Replace the solution in the protective cap with a few drops of
HI 70300L Storage Solution or,
in its absence, HI 7082 Fill Solution. Follow the Preparation Procedure before taking
measurements.
Note: NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED WATER.
PERIODIC MAINTENANCE
Inspect the electrode and the cable. 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.
PROBE MAINTENANCE
Refill the reference chamber with fresh electrolyte ( HI 7082). Allow the electrode to stand
upright for 1 hour. Follow the Storage Procedure above.
CLEANING PROCEDURE
•
Wine deposits Soak in Hanna HI 70635 cleaning solution for 15 minutes
• Wine stains Soak in Hanna HI 70636 cleaning solution for 15 minutes
IMPORTANT: After performing any of the cleaning procedures, rinse the electrode thoroughly
with distilled water, refill the reference chamber with fresh electrolyte and soak the electrode in
HI 70300 Storage Solution for at least 1 hour before taking measurements.