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Operation
Adsorb Time. Use the Sample Penetration Depth to sample from
either headspace (the vapor above the sample) or into the liquid.
The fiber holder sheath (the needle at the end of the fiber holder) will
penetrate about 6 mm into the sample vial. The fiber will be
extended varying distances based on the penetration depth setting.
For liquid sampling you will get best results if the level of the liquid in
the vial does not contact the fiber sheath thus potentially causing
carry-over.
•
The Auto Sampler will next perform the SPME sample introduction
into the injector. The SPME fiber holder will descend and penetrate
the injector septum. The fiber will then be extended the specified
Desorb time on the main SPME parameters page.
•
Upon withdrawal from the injector, any post injection clean actions
will be performed.
The SPME mode screens and parameters are summarized below:
CP-8400 AutoSampler & CP-8410 AutoInjector
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