Metrohm 872 Extension Module Liquid handling - Manual (Page 44)

5.6 Injection valve
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872 Extension Module – Liquid handling
3 Sample inlet 4 Sample outlet
5 Sample loop
Position A In the position FILL, the sample solution flows
through the sample loop to the waste container.
Position B In the position INJECT, the Dosino aspirates the
transfer solution through the sample loop to the
10-port valve. If sample solution is to be found in
the sample loop at the time of the valve switch-
ing, then this will be conveyed along with the
transfer solution, thus making its way via the 10-
port valve to the transfer tubing.