Normalizing GC results in Intelligent Reporting from different detectors

You can definitely set up an intelligent report to do what you want, but there is a much easier way to do this in OpenLAB ChemStation.

When you create a calibration table, ChemStation gives you an option to 'Calculate Signals Separately':

When selected 'Calculate Signals Separately' ensures that, in the calculation of Normalized Percent reports, the amount percent of separately reported signals adds up to 100% for each signal. When 'Calculate Signals Separately' is deselected, the amount percent of all signals adds up to 100%.

All you need to do to perform the calculation that you are describing is to build a calibration table for your TCD and FID signals where you leave the 'Calculate Signals Separately' option deselected and then have ChemStation output a Normalized Percent (Norm%) report. To set up the Norm% calculation in ChemStation Data Analysis, go to 'Report'>'Specify Report' and then select Norm% for ChemStation's calculation mode:

You can definitely set up an intelligent report to do what you want, but there is a much easier way to do this in OpenLAB ChemStation.

When you create a calibration table, ChemStation gives you an option to 'Calculate Signals Separately':

When selected 'Calculate Signals Separately' ensures that, in the calculation of Normalized Percent reports, the amount percent of separately reported signals adds up to 100% for each signal. When 'Calculate Signals Separately' is deselected, the amount percent of all signals adds up to 100%.

All you need to do to perform the calculation that you are describing is to build a calibration table for your TCD and FID signals where you leave the 'Calculate Signals Separately' option deselected and then have ChemStation output a Normalized Percent (Norm%) report. To set up the Norm% calculation in ChemStation Data Analysis, go to 'Report'>'Specify Report' and then select Norm% for ChemStation's calculation mode:

You are welcome!

As for changing this setting on an existing calibration table, unfortunately it cannot be done. It can only be set in the initial window when creating a new calibration table.

No problem! If you have time, would you mind coming back to the thread and marking a correct answer to make the solution more visible?

Ryoboyle,

Thank you!  That sounds like exactly what I need.  I was thinking there should be something like that already built into the software but I didn't know where to find it.  Can I apply it to an existing calibration table or does that need to be set initially?

Thanks,

Erik

Rats.  Haha.  Ok, we'll it beats having to make a whole new Intelligent Report.  Thanks again for your help, ryoboyle.

Yes, I confirmed it.  That was exactly what I was looking for, ryoboyle.  Thanks again.

Erik