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High Base line with GC-FID

http://www.chromforum.org/viewtopic.php?t=8469

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High Base line with GC-FID

Posted: Tue May 20, 2008 12:08 am
by iskandar
We have a problem with high base line above 150 pA with capillary column from phenomenex by using Nitrogen as carrier gas and FID detector. The problem does not occur if we use HP-5 column from agilent with the same condition where the base line below than 30 pA. Please help me how to solve the problem and what wrong with this phenomena. :evil:

Posted: Tue May 20, 2008 12:42 am
by chromatographer1
Either you have installed the column incorrectly, or the new column is bleeding excessively.

I suggest you call your column vendor and ask for customer or technical service.

best wishes,

Rod
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