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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: mandytan on May 01, 2012, 12:28:28 AM

Title: GC-FID
Post by: mandytan on May 01, 2012, 12:28:28 AM

I have two FID (flame ionization detector) jets with different exit diameters. One of the jet allows my capillary column to go right through it to the other end/tip while the other does not allow the capillary column to go through the end as the "tip" is narrower.
I am not familiar with the FID jet so which jet should be used?

Title: Re: GC-FID
Post by: JGK on May 01, 2012, 03:08:22 PM

What information does the instrument manual give you?

Title: Re: GC-FID
Post by: Stepan on May 02, 2012, 07:53:39 PM

The column shouldn't go through the jet. Try the one with narrow opening first. It should give better signal.