2.8 Dosing and liquid handling
54 Metrohm 838 Advanced Sample Processor, Operation
2.8 Dosing and liquid handling
2.8.1 Dosimats and Dosinos
Three 685/805 Dosimats or 700/800 Dosinos can be used as dosing in-
struments connected directly to an MSB socket. They can be controlled
with the DOS command.
Each Dosimat or Dosino can be equipped with various exchange units
or Dosing units. Before these units are exchanged the buret stopcock
must always be moved to the exchange position, as otherwise when
the buret is removed there is the risk of serious damage to the buret
itself or to the Dosimat or Dosino drive unit.
Before removing the Dosing unit or exchange unit always trigger
the 'DOS: X.Y : release command!
With Dosimats and Dosinos any volumes of auxiliary solutions up to 999
mL can be added. With both types of instrument the filling function can
be selectively triggered (
DOS: X.Y : fill). When switched on the
dosing or exchange unit will always be filled via Port 2 (filling port).
The Sample Processor automatically recognizes the type of dosing in-
strument connected to it.
Further commands are available for the 700/800 Dosinos, so that the
wide range of possibilities which characterize these Dosing units can
be used to the full extent.
800 Dosino
502
20
10
5
800 Dosino
Fig. 6 Dosino 800 with Dosing units
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