GE Monitor UPC-900 Operating Instructions Manual page 41

Insert the pH electrode
Step
1
2
3
4
Monitor UPC-900 Operating Instructions 29-0567-16 AB
NOTICE
Never leave the pH electrode in the cell holder when the system is
not used, since this might cause the glass membrane of the elec-
trode to dry out. Remove the pH electrode from the cell holder and
fit the end cover filled with a 1:1 mixture of pH 4 buffer and 2 M
KNO . Do NOT store in water only.
3
Action
Unpack the pH electrode. Make sure that it is not broken or dry.
Before using the electrode, remove the electrode end cover (4) and immerse
the glass bulb in buffer for 30 minutes.
Remove the dummy electrode (1) from the flow cell and store it in the flow
cell holder (5).
Carefully insert the electrode (2) in the flow cell. Tighten the nut by hand to
secure the electrode.
3
2
1
Note:
If the flow cell is full of liquid, it is not possible to insert the electrode. If so,
loosen the inlet connection while inserting the electrode to allow the liquid to
run out from the flow cell. Remember to re-tighten the connector.
4.5 Install the pH electrode
4
5
4 Installation
41