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- Posts: 4
- Joined: Tue May 07, 2019 7:18 am
I have got a question about the creation of a custom field over area ratio in Empower 3.
In my documentation I need to calculate the RSD% area ratio between a known peak and an internal standard peak in a sample type "Standard".
This is not a problem since indicating that one of the peaks is internal standard Empower 3 calculates Area ratio in the calibration, but, I also need to calculate RSD% area ratio between the same peaks but standard + brackets.
The problem comes because in my documentation the brackets are a type of sample "Control", and I want to avoid having to modify the sample type from "Control" to "Standard" in the brackets, since this way I would do a calibration line with the included brackets and in my documentation does not indicate this.
I have been trying to create a custom field of area ratio including the exact name of the peak Example: Area * EQ (Name, "peak A") / Area * EQ (Name, "peak B"), but this formula did not work.
Any help on how to write exactly the parameters in the formula?
Many thanks
Best regards