Transfer Tubing; Figure 14 Transfer Tubing (6.1562.160) - Metrohm 942 Extension Module Vario LQH Manual

7.2 Transfer tubing

7.2 Transfer tubing
1 Connection to Dosino
3
Stand base
For insertion into the bottle holder
(6.2057.200).
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The transfer tubing – a long, coiled tubing (V = 15 mL) – is used for "stor-
ing" different liquids. In addition, it prevents the Dosino from being con-
taminated by these liquids. Different liquid segments can be separated by
air bubbles or water. Using the transfer tubing's stand base (14-3), there is
space for the transfer tubing in one of the slots on the bottle holder.
Figure 14 Transfer tubing (6.1562.160)
The transfer tubing is connected to the central port of the 10-port valve
with one connection (14-2) and to a Dosino with the other connection
(14-1).
The Dosino takes over transporting and dosing liquids and is filled with a
transfer solution (usually water). It can aspirate and expel a defined vol-
ume of liquids.
Aspirating: The liquid is aspirated into the transfer tubing out of the
￭
active port on the 10-port valve via the central port.
Expelling: The liquid collected in the transfer tubing is transported via
￭
the central port of the 10-port valve to the active port.
1
2
3
2 Connection to 10-port valve
942 Extension Module Vario LQH (2.942.0070)
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