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result normalization

Posted: Tue Dec 12, 2017 2:44 am
by MODOU LO
Please help.
I am analyzing Triethylene glycol sample for purity, I inject into the GC against standard and water content analyzed by Karl Fischer instrument.
My question is reporting of the result do I first normalize the GC result, then subtract the water result from 100% and finally renormalize the GC result for reporting.
Thank you.

Re: result normalization

Posted: Tue Dec 12, 2017 3:33 am
by dap
Hello.
Imho assay, % = purity, % * (100 - water, %) / 100.