NAVI D-25, Instruction Manual

Page: 157 / 227

6 Maintenance and Troubleshooting
6.2 ION electrode maintenance
146 HORIBA
6.2.1 65XX-10C electrode maintenance
Refer to the electrode operation manuals for
maintenance concerning other electrode models.
●
Long-term storage
1.
Remove the tip electrode from the combined
electrode and put on the rubber cap.
2.
Put the electrode protective cap on. (Do not put
water in the protective cap, and make sure it is
dry.)
3.
Store both the tip electrode and the combined
electrode in a dry place.
4.
To reuse the electrodes, start with the
operations explained in the section entitled “
●
Before using” page 144.
●
Daily maintenance
When an electrode has not been used for a long period
of time, some of the sample may have entered the
reference solution (outer tube) or the reference solution
may have become weak. For this reason, perform the
following operations from once a week to once a month
to replace the internal solution within the reference
electrode (outer tube).
1.
Open the internal solution filler port by removing
the rubber stopper, turn the electrode upside
down, and use a syringe to remove the
reference solution.
2.
Use the syringe to fill the electrode with the
specified reference solution.
Ideally, a tiny amount of the reference solution should
flow from the tip of the electrode. If the amount of liquid
flowing out is extremely small, however, the electric
potential of the reference electrode will not stabilize and
will be affected by the stirrer. In such cases, perform the