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3Ć75
Maintaining the System
CAUTION: Do not touch the internal electrode wire. The wire is fragile and is
easily damaged.
3. Use the hex tool to remove the internal electrode from the cassette you are
replacing.
4. Discard the cassette according to your laboratory protocol.
5. Stand the internal electrode on its cap in a safe place.
6. Remove the new reference sensor cassette from its box.
7. Fill the electrode compartment in the new cassette:
a. Insert the tip of the KCl fill solution container into the electrode
compartment as shown in Figure 3-48.
b. Slowly fill the electrode compartment by gently squeezing the container until
the KCl fill solution enters the KCl reservoir.
OĆring
Sample Path
4M KCl Fill Solution
OĆring
CAUTION: Do not touch the internal electrode wire. The wire is fragile and is
easily damaged.
8. Use the hex tool to screw the internal electrode into the electrode
compartment, ensuring that you do not cross-thread the electrode.
9. Fill the KCl reservoir in the new sensor:
a. Remove the reservoir cap with the hex tool as shown in Figure 3-49.
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