Markes International Unity 2 User Manual page 39

Trap Desorb
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Tube desorption may be carried out split or splitless i.e. all the sample from the
sample tube can be transferred to the trap or part of it sent to the split vent. If a
split is required during tube desorption (a so-called inlet split, see Section 1.4)
check the relevant box. If the split is selected to be off during tube desorption,
all the analytes will be transferred from the tube to the cold trap.
If an elevated temperature purge is required, see Section 2.6.4, then Time 1
and Temp 1 should be set to reflect the required elevated Prepurge time and
temperature. In this case, Time 2 and Temp 2 become the actual analytical tube
desorption time and temperature and time values should be entered
appropriately.
Typical elevated temperature purge settings are 5-15 minutes at 50-100°C.
Set the Trap Low temperature by clicking in the box and typing in the required
value.
QUI-1057
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