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How to select "loop final pressure" on Agilent 7697A
Discussions about GC and other "gas phase" separation techniques.
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How to select "loop final pressure" on Agilent 7697A headspace? Should the final loop pressure be higher or lower than the carrier pressure?
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Final pressure is not related to carrier pressure. You should choose a pressure lower than that used to pressurize vial: this difference is used by system to fill loop with sample. initial pressure is dependent from sample matrix and method condition: for example you can start from 15 psi and finish at 11.
Try to find best combination for your samples.
Try to find best combination for your samples.
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