Metrohm 872 Extension Module Liquid handling - Manual (Page 42)

5.6 Injection valve
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872 Extension Module – Liquid handling
5.6 Injection valve
5.6.1 Connecting the injection valve
Connecting the injection valve
NOTE
Connect the capillaries and the sample loop with 6.2744.010 pressure
screws.
1 Connecting the sample path
￭ Connect the sample inlet capillary to the connector 2.
￭ Connect the sample outlet capillary to the connector 1.
2 Connecting the transfer solution path
￭ Connect the transfer solution aspirating capillary to the connector
5.
￭ Connect the transfer solution outlet capillary to the connector 4.
1 2
3
4 5
6
1
2
3
4
5
6
7
7
7
7
Figure 22 Injection valve - Measuring volume
1 Injection valve 2 Sample loop
For accurate measuring of small volumes.
3 Transfer solution outlet capillary
to the 10-port valve. 4 Transfer solution aspirating capillary
to the container with transfer solution.
5 Sample outlet capillary
to the waste container. 6 Sample inlet capillary
from the peristaltic pump
7 PEEK pressure screw 6.2744.010