NAVI D-25 Instruction Manual page 152

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4.
Fill the electrode with new internal solution
(#300), until it nears the opening.
5.
Wash the tip of the electrode well with pure (de-
ionized) water and wipe it with filter paper or
tissue paper.
6.
If the liquid on the inside of the electrode cap
has dried, wash the inside of the electrode cap
with pure (de-ionized) water, and then, after
shaking out the water, fill the cap with enough
pure water to soak the sponge.
If the solution inside the protective cap for the electrode
has dried up and the electrode has not been used for an
extended period of time, the response speed of the
electrode may be slower (and its sensitivity lower) than
before.
6 Maintenance and Troubleshooting
6.1 pH (ORP) electrode maintenance
141