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- Posts: 12
- Joined: Thu Dec 05, 2013 5:29 pm
I am running an Agilent 7890B GC. This is being used to measure the percentage of Ethanol in a solution. When we make our calibration curve the R^2 value is 0.99 up to the 60% standard. However, once we run the 70% standard and above we begin to lose correlation and the values do not fit as nice. Is there a way to fix this or is it just Beer's Law at work?