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Why use nC4 as a tie

Discussions about GC and other "gas phase" separation techniques.

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Why use nC4 as a tie

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BEE
HI,
Please can some one explain to me why we use nC4 as a tie in GC computation for liquid hydrocarbons.

Thanks,
Bee

Re: Why use nC4 as a tie

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Johnny Rod
I take it you're using the relative response factors from the ISO method? Something has to be the base, and it looks like n-butane is it!
Where can I buy the kit they use in CSI?
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