Introduction to Headspace and to the G1888 Network Headspace Sampler
User Information
41
Modes of Operation
The G1888 Network Headspace Sampler has two modes of
operation—standard headspace extraction and multiple
headspace extraction.
Standard headspace extraction
In standard headspace extraction mode, one extraction is made
per vial. The GC run starts when the Headspace Sampler injects
the sample into the GC inlet. In order to maintain the same
incubation interval during the gas chromatographic run, the
Headspace Sampler transfers vials one by one into the oven and
recovers each vial after sampling. More than one vial can be
present in the oven simultaneously. The sampler analyzes the
event times and the GC cycle time, then adjusts vial delivery
and recovery times to optimize overall process time. Vial
agitation is allowed in this mode.
Note that the GC run cycle time is the time from injection until
the system is ready for another injection. Occasionally, the time
for data handling becomes a factor.
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