How to create a Group for a compound and it's isomer? (EZ Chrom)

Hello all,

I am currently setting up a multi-level calibration on EZ Chrom Elite but one of the components in my final standards is a composite of Hexane and it's isomer. How do I define this as a group when I don't know the exact concentrations of each? For example I have 500ppm of hexane in my standard but I don't know how much of this is hexane 1 and how much of it is hexane 2 (the isomer).

Any help is appreciated!


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