Height relative percentage calculation

ALO_EUROAPI

Hello,
I would like to calculate the height relative percentage of 5 components in an injection:

100% acetone --> 100%
80% acetone --> (Height(80% acetone)/Height(100%acetone))*100
60% acetone --> (Height(60% acetone)/Height(100%acetone))*100
40% acteone --> (Height(40% acetone)/Height(100%acetone))*100
20% acetone --> (Height(20% acetone)/Height(100%acetone))*100

I don’t know how to create the Custom Field and apply it to my table below:
 
                               Height                 Real % acetone
100% acetone                                              100
80% acetone                                               xxxx
60% acetone                                               xxxx
40% acteone                                               xxxx
20% acetone                                               xxxx

Can you please help me?
Many thanks in advance.
Best Regards.

Jovvor

You will have to create a custom field to extract the height of your 100% standard. 
You can do that by creating a custom field based on the label of the standard.

For example 100% standard with label S100

Then create a custom field to extract that height.
Peak, Real, Formula: S100.1.Height , If you need an average: S100.%..AVE(Height) and give the custom field a name: S100_Height
This custom field will take the height of your injection with label S100 or the average of all injections with S100 as a label.

Then create a custom field where you divide the height by the 100% standard height
Peak, Real, Formula: Height/S100_Height

That should calculate what you want.

For best results, batch process your sample set and put a summarize custom field function at the end of the sequence.