Discussion Category:  GC Systems

FID collector

 My FID (collector) shows malfunction (unstable baseline) after few samples (70-80) and I have to change it.

What could be the cause of this malfunction?

Many thanks by advance.   Saadoun
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Saadoun
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Dim

Hi Saadoun, 

this is probably contamination from your samples or your column. Clean the jet and the collector (i use soapwater then sonicate it with acetone or methanol depends on the application) and reinsert both into your detector. Remove your column from the detector and bake it out for a few hours,10C below the columns max. temp should work.

I hope this helps.

D

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