huge ghost peaks
Posted: Tue Oct 29, 2013 4:01 pm
by jiangds06
see huge peaks of decamethyl cyclopentasiloxane, octamethyl cyclotetrasiloxane,docecametyl cyclohexasiloxane,
Are they column bleeding, how can I get ride of them? Thanks a lot!
Re: huge ghost peaks
Posted: Tue Oct 29, 2013 6:48 pm
by James_Ball
Are there any septa particles in the lower part of your injection port? If a piece of septa falls down into the injection port sometimes the solvent from the injection will extract siloxanes from the septa and make such peaks.
Re: huge ghost peaks
Posted: Fri Nov 01, 2013 4:15 pm
by jiangds06
I figure it out. it is not in the system. probably from the cap.
it is in the
Are there any septa particles in the lower part of your injection port? If a piece of septa falls down into the injection port sometimes the solvent from the injection will extract siloxanes from the septa and make such peaks.