Download - Agilent Technologies

Prep-ahead
Item
Description
Use Prep-ahead
Yes or No
If prep-ahead is used, the AutoSampler will begin the sampling
process after the prep-ahead timer has expired. This allows you to
sample for extended lengths of time, while the previous sample
chromatogram is running, without adversely affecting the throughput
of your system. The prep-ahead timer starts after the Auto Sampler
has finished all injection actions for the previous injection.
Prep-ahead
Delay
0 to 999.99 minutes
Adjust this time so that sample adsorption is complete just as the GC
becomes Ready following the previous sample run.
Sampling
Item
Description
Sample Depth
(%)
0 to 100%
Sample depth determines whether the sample is adsorbed from the
liquid sample or from the headspace above the sample. For liquid
sampling, carefully adjusting the sample depth so that the fiber
holder does not contact the sample liquid prevents sample carryover.
Agitation Strokes 0 to 500000
If Headspace sampling is used, no agitation is required. Enter a
value of 0. For liquid sampling, agitation is generally desirable to
speed adsorption of the sample. Assume approximately 100
agitation strokes per minute of adsorption required. 1,000 agitation
strokes is typical.
Adsorb Time
0 to 999.99 minutes
The adsorb time is executed for each Agitation Stroke. For
Headspace sampling or liquid sampling without agitation, enter the
total desired adsorption time, for example 10.0 minutes, divided by
the number of agitation strokes, typically 1. For liquid sampling with
agitation, enter a value of 0, which will allow the maximum agitation
rate.
450-GC Sample Delivery
259