Chromatography Forum

Hi all,

I'm looking at a printout from Agilent Chemstation software. In the Area Percent Report, it includes Peak #, retention time, and type of integration (among other things). I'm familiar with the usual autointegration notations like "VV" (valley-to-valley), "BB" (baseline-to-baseline), etc. However, in a couple of instances, I'm seeing additional notations ,like "R" or "X"; they appear in the printout like "VV R", or "VV X". What does the "R" and X" signify? Also, when manual integrations are done, I'm seeing abbreviations like "MF" or "FM"; can someone define these notations for me? I'm sure this info is probably buried deep within the Chemstation manual....somewhere...but I'm being a little lazy here.

Thanks!!

M is manually integrated.
F is forced integrated.

I'm guessing MF or FM indicates that one side of the peak was manual and the other side was forced.

Per ChemStation manual, R is for a solvent peak that was affect by manual integration in some way -- R evidently stands for "re-calculated solvent." If you're getting it from an auto integration, I don't know what it means.

No idea what X is.