User`s guide

Operation
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The following two modes are only available on the TurboMatrix 650
ATD
Two Stage Desorption and Recollect Sample onto Same Tube
During Secondary Desorption, the sample is split between the GC
column and the tube the sample was originally collected on. Up to 50
tubes can be used in this mode.
Two Stage Desorption and Recollect Sample onto New Tube
During Secondary Desorption, the sample is split between the GC
column and a new tube that has been loaded from the carousel. Up to
25 sample tubes can be used in this mode. The sample and recollect
tubes are mounted on the carousel such that the sample tube at a
given position (1-25) has a corresponding recollection tube located
25 positions away (26-50).
Trap Clean- This mode enables a the trap to be heated under
controlled conditions to remove lower molecular weight impurities
and adsorbed volatiles before it is used for sample analysis. In this
mode, only the cold trap is heated and vented through the Input Split
flow control to prevent contaminants from entering the GC column.
Trap Test-In this mode, only the cold trap is heated and a GC run is
started to verify that the trap is clean before starting a sequence of
analyses.
Tube Conditioning—This mode enables a sample tube to be heated
under controlled conditions to remove lower molecular weight
impurities and adsorbed volatiles before it is used for sample
collection. Each tube is leak tested and purged of air prior to heating.
In this mode the cold trap is isolated from the sample tube at all
times.
The tube condition temperature and flow are set using the SET
button on the Options Tab.
Two Stage Desorption and Tube Condition
During Secondary Desorption, the sample is released onto the GC
column and the sample tube is conditioned by venting through the
Input Split flow control to prevent contaminants from entering the
GC column
The following modes available with the appropriate optional
accessory installed