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- Posts: 30
- Joined: Tue Oct 24, 2017 1:30 pm
What happened is that I had ran standards on the GC-MS over a range of concentrations. This calibration curve could last me for about a month as long as the continuing calibration verification ran later on is at least 50 % peak area as that produced by the respective standard during the calibration. However I noticed that the continuing calibration verifications ran later do not meet this 50% . In fact, it is even lower. I had tried freshly prepared the ccvs but still the peak response comparison do not meet 50%.
Is it the tuning issue? I do a auto tune before running the calibration standards and later on, before running the continuing calibration verification (ccv) and samples, a quicktune.