horiba LAQUAact-PD110, Instruction Manual

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Maintenance
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Maintenance and storage of the DO electrode
For the detailed procedures for maintaining and storing electrodes, refer to the
instruction manual for each electrode. This section describes an overview of the
procedures for maintenance and storage to be performed as part of daily use.
• How to clean the membrane of DO electrode
The membrane of DO electrode is extremely thin. Take care not to tear the membrane
when cleaning. Clean the membrane with pure water (or deionized water) and wipe it
with a soft cloth, taking care not to damage it.
Note
When using a neutral cleaning solution to clean the DO electrode, keep the neutral cleaning
solution away from the membrane in order to prevent deterioration of the membrane.
• Daily storage of the DO electrode
Follow the steps below to store the electrode correctly.
9520-10D
1. Clean the DO electrode well with pure water
(or deionized water).
2. Attach the adapter to the DO electrode.
3. Immerse the DO electrode in a conical flask
containing zero standard solution (5%
sodium sulfite solution).
9551-20D, 9551-100D
1. Clean the DO electrode well with tap water.
2. Keep the DO electrode immersed in tap water.
Note
Leave the DO electrode connected to the instrument.
• When the DO electrode will not be used for a long period
Follow the steps below to store the electrode correctly.
9520-10D, 9551-20D, 9551-100D
1. Clean the DO electrode well with tap water,
then dry it with cotton gauze.
2. Remove the DO tip from the DO electrode.
3. Attach the socket on the DO chip, then store
it in a cool, dark location.