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Topic: Compressed Air for Gas Chromatography  (Read 3577 times)

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Offline mandytan

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Compressed Air for Gas Chromatography
« on: July 15, 2012, 06:00:12 AM »
For compressed air for Gas Chromatography, is it necessary to use purified grade compressed air or will industrial grade compressed air be alright?
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Offline Arkcon

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Re: Compressed Air for Gas Chromatography
« Reply #1 on: July 15, 2012, 08:23:12 AM »
That would really depend on what's in the industrial grade air.  I'd suspect, for various batches, there would be too much hydrocarbon impurity in the tank to run a GC.
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Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline Stepan

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Re: Compressed Air for Gas Chromatography
« Reply #2 on: July 17, 2012, 10:45:19 PM »
It also depends on the sensitivity you are trying to achieve. I am working at 1-10 ppm levels using FID detector. "Medical Grade" compressed air is sufficient for my application. 
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