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S/N Ratio in empower
Posted: Thu Aug 24, 2006 2:16 pm
by mhemberg
Does anyone have any tricks to calculate a S/N ratio in empower
Thanks
Posted: Fri Aug 25, 2006 8:43 am
by bartjoosen
You can make a customfield which does the trick for you.
You have different types of noise, depending on your needs and calculation.
Also, if I'm right, there is an implementation of the Pharmacopea requirements for S/N in Empower 2. So you don't have to make your own custom fields
Bart
Posted: Fri Aug 25, 2006 8:51 am
by Syntaxerror
The custom field formula is :
Height/Blank..(Baseline Noise*1000)
S/N Ratio
Posted: Fri Sep 01, 2006 3:51 pm
by ashaker
You can build in this formula in Empower:
S/N Ration = Height/(Baseline Noise x 1000)
You need the 1000 factor because your peak height is measured in uv while your baseline noise is measured in mv.
Regards!
Posted: Mon Sep 04, 2006 6:56 am
by Syntaxerror
The custom field formula is :
Height/Blank..(Baseline Noise*1000)
A blank injection should be labeled "Blank" in your sample set