I am currently about to measure a mixture of ethylene and ambient air with an Agilent 7890A. I want to inject it manually with a syringe in to the front inlet, following to this method
The columns are 19095P-Q04 and 19095P-MS0.
No matter what I changed, I see only 2 peaks, which I would identify as Argon and Nitrogen with reference measurements. How is this possible?
Thanks and best regards