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- Posts: 9
- Joined: Fri Nov 01, 2019 2:56 pm
Thank you for clicking on this post. I have a question for any chromatographer that is more experienced than I.
I have just taken up GC-MS as of the past three months. I have been relying on the methods set up by the guy who preceded me. It is to my understanding that a five point calibration curve is pretty standard, however, I am not sure that the concentrations he chose are appropriate.
I am measuring the concentration of active flavor compound in an oil. The spec range for the analyte is roughly 28-32 percent. The supplier sends a COA, but we check it because of a past incident. The calibration curve per the aforementioned method uses standard concentrations of 2,5,10,25, and 50 percent. I don't have the appropriate pipettors to measure the first two standards accurately, so I have just been using three points for the calibration curve.
I need to decide if I want to buy a new pipettor, or bracket my spec range with standards that are closer to the analyte concentration.
Advice?