High bleed and noise
Posted: Sat Feb 24, 2018 12:56 pm
Hy!
I've got a problem with high noise and extremely high bleed on my Agilent GC 6893- MS 5973 N (diffusion pump) system. Recently, the electron multiplier and filaments are changed and the whole MS system is cleaned. I use ZB-WAX (60 meters x 0.25 mm x 0.50 μm) column with the following temperature program 40 C for 5 min and then temperature rise with the rate of 2 C/min up to 240 C. The column is also brand new and installed by an expert.
What can I do to minimize the column bleed?
There is a chromatogram obtained for mix of standards in concentration of 1 mg/L : https://www.flickr.com/photos/162987565@N07/
Tnx in advance.
I've got a problem with high noise and extremely high bleed on my Agilent GC 6893- MS 5973 N (diffusion pump) system. Recently, the electron multiplier and filaments are changed and the whole MS system is cleaned. I use ZB-WAX (60 meters x 0.25 mm x 0.50 μm) column with the following temperature program 40 C for 5 min and then temperature rise with the rate of 2 C/min up to 240 C. The column is also brand new and installed by an expert.
What can I do to minimize the column bleed?
There is a chromatogram obtained for mix of standards in concentration of 1 mg/L : https://www.flickr.com/photos/162987565@N07/
Tnx in advance.