While using GC Sampler 80 for headspace analysis, is there a way to delay the split flow so that the split won't be turned on during sample incubation?

Ekka 24 days ago

We have a 7890A coupled with GC Sampler 80. I noticed that when we use a split method, the split flow will be turned on in the beginning of the incubation. This is quite a waste of helium gas in my opinion. I have tried to look for any delay settings and was not able to find any. Am I missing anything? Is there any way to save helium?

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0 Ekka 23 days ago

While waiting for any answers, I'd like to add some of my thoughts.

Based on my previous experience on Gerstel TDU/CIS inlet and Axel LC/GC inlet, those inlet flow and split vent (or equivalent vent) were both controlled by a separate in/out flow device built by Gerstel/Axel. I wonder if it was due to the control of the inlet timing. But since this autosampler was installed with imbedded Agilent method, I wonder if there might be a solution.
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0 Ekka 23 days ago

While waiting for any answers, I'd like to add some of my thoughts.

Based on my previous experience on Gerstel TDU/CIS inlet and Axel LC/GC inlet, those inlet flow and split vent (or equivalent vent) were both controlled by a separate in/out flow device built by Gerstel/Axel. I wonder if it was due to the control of the inlet timing. But since this autosampler was installed with imbedded Agilent method, I wonder if there might be a solution.
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