Glossary
MicroSAM
114 Operating Instructions, 06/2012, C79000-G5376-C560-07
&XW
Once the components have passed
through the first column, a number of them
are flushed through the cut output. They
never reach the second column. This
operating state is used in the following
cases:
To keep components which cannot be
backflushed away from the second
column, because these are followed by
further components which are to be
measured.
If components would falsify the result or
damage the second column.
In order to directly pass components to
a further detector, e.g. to shorten the
duration of the analysis.
A.1.1 Advantages of live switching
● The sample only comes into contact with parts of the live T-piece, but not with valves.
● No switching valves are required in the oven, and the column switching does not result in
any temperature limitations.
● The live switching is maintenance free since there are no moving parts.
● The live switching has a minimum dead volume, and is therefore particularly suitable for
capillary columns.
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