User manual

Storage of the pH electrode
The pH electrode should always be
stored in a 1:1 mixture of pH 4
buffer and 2 M KNO
3
when not in
use. When the pH electrode is
removed from the flow cell, the
dummy electrode (supplied) can be
inserted in the flow path.
Electrode regeneration: If the
electrode has dried out, immerse
the lower end of the electrode in
buffer with a 1:1 mixture of pH 4
buffer and 2 M KNO
3
overnight.
3.15 Restart after power failure
If the power supply to the module is interrupted, it automatically
restarts when power is restored and displays the main operating
menu. All set values are retained in the module and the lamp is
switched on.
CAUTION! Never leave the pH electrode in the flow cell for any
period of time when the system is not used, since this may cause
the glass membrane of the electrode to dry out. Dismount the pH
electrode from the flow cell and fit the end cover filled with a 1:1
mixture of pH 4 buffer and 2 M KNO
3
.
Do NOT store in water only.
Monitor UPC-900
User Manual 18-1125-55 Edition AE
21
Operation 3