7. Maintenance
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Other Maintenance 7-2.
7-2-1.Storage of the instrument
Store the instrument, if it is not going to be operated for a long period of time in a place
where there is no direct sunlight or under no vibration, and the place is dry, not humid.
It is recommended to pack it in the carton box in which the instrument was first
delivered.
Store in a desiccant container the disassembled titration cell, inner burette and electrode
as they are after cleansed and dried.
7-2-2.Cleaning the electrode
＜Twin platinum reference electrode＞
If the electrode is heavily stained and the potential is unstable and measurement reading
fluctuates, cleanse it with nitric acid, and after cleaning by methanol, wipe off with clean
gauze.
＜Inner burette＞
Periodical cleaning of inner burette is recommended since if the inner burette is stained,
the electrolysis reaction will not run smoothly, and may cause a longer time length in
measuring process with measurement results higher than theoretical value
Cleaning with alcohol: general method
1) Turn off all the powers.
2) Disconnect the electrodes from their ports.
3) Take out both anolyte and catholyte.
4) Wipe off grease around sliding area with methanol.
5) Rinse the inner burette with methanol, and fill it with approximately 10mL of
methanol, and then, put it in a beaker. Fill the beaker with methanol up to the level
of methanol inside the inner burette, and leave it for about 30 minutes.
6) After the above 5), dry the inner burette.
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