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- Posts: 26
- Joined: Sun Nov 05, 2017 7:02 am
I have a standard mix gas contain: CO2 10.2 ppm CO 2.3ppm in nitrogen
I injected this STD two month ago and it's peak size was normal, today I inject this STD again but the peak sizes was abnormal, peak size of CO2 was so decrease, this problem is about the mix gas, but i dont know why this happened?
i analysis bay gas chromatography with FID detector and methanaizer