GC headspace - method transfer to different hardware

[ydna6969]

Hi ,

I am currently trying to transfer in a GC headspace method which uses a transfer line , injection time and withdrawal time (Agilent 7697) to a gas tight syringe set up (Themo tri plus).

Any easy way to obtain same sensitivity and chromatography across the 2 systems ie .. convert transfer and time to syringe volume ?

Thanks

[rb6banjo]

Did you dismantle the previous system? I'd just run them head-to-head and see how they compare (accuracy, precision, limit of detection, etc.). I'd keep adjusting the new method until it matched or is better than the old one.

[dlbenach]

The 7697 uses a sample loop, typically 1 mL, so your injection volume from the syringe would be the same. Vial equilibration temp and times would be the same. I usually use the loop temp as my syringe temp.