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How to calculate S/N ratio?

http://www.chromforum.org/viewtopic.php?t=22327

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How to calculate S/N ratio?

Posted: Fri Apr 05, 2013 2:44 pm
by mk_3249
Hello evryone.
Please guide me through the calculation for S/N ratio from this chromatogram given below?
I am confussed in the equation S/N = 2H/h. I have the value of H and h in milivolt(mV). Is it possible to calculate from this? Or H should be in milimeter?

Image
http://i46.tinypic.com/2mnp2eg.jpg

Re: How to calculate S/N ratio?

Posted: Fri Apr 05, 2013 4:18 pm
by DR
::have not seen the picture::

As long as your units are consistent, it does not matter.
Signal to noise is a dimensionless number, usually expressed as a percentage.

Re: How to calculate S/N ratio?

Posted: Fri Apr 05, 2013 8:05 pm
by ScottHorn
In Clarity's chromatogram window, right click on the results table and choose "setup columns", then click on new column. You should have a few options there related to noise. You could set up a custom calculation there to calculate the S/N ratio for each peak.

Re: How to calculate S/N ratio?

Posted: Fri Apr 05, 2013 8:45 pm
by dblux_
viewtopic.php?f=1&t=20977&start=0&hilit=signal%2Fnoise
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