Impact of Septum Purge on Headspace Sampler Analysis

Good afternoon.

My name is Victor, I have a question about septum purging.

Purging the septum prevents any residue of any substance that isn't it or that passes through the septum from contaminating the sample, correct?
I would like to know is, for headspace analysis, does the sample go through the same injector that performs liquid injection? If so, does septum purging have any impact or not on headspace analyses?

The models we have are the ones below:

Name - 7890
Model Number - G3440A
Serial number - CN11021110

Name - 7693A
Model Number - G4513A
Serial number - CN10520154

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