alternative ferrules for MS interface nut
Posted: Tue Apr 03, 2007 2:46 pm
hello,
We use vespel/graphite ferrules (85% - 15%) to connect our capillary column 0.25 mm ID 30 m. to the MSD interface. The MS is an 'old' Agilent 5972. The problem is that we daily have to retighten the nut to avoid leaks. This is very boring, I think it has to do with the ferrule material. I heard there exist a new type of ferrules, consisting of aluminium and vespel. This should be a valuable alternative. Who can give advise? Thanks,
Steven
We use vespel/graphite ferrules (85% - 15%) to connect our capillary column 0.25 mm ID 30 m. to the MSD interface. The MS is an 'old' Agilent 5972. The problem is that we daily have to retighten the nut to avoid leaks. This is very boring, I think it has to do with the ferrule material. I heard there exist a new type of ferrules, consisting of aluminium and vespel. This should be a valuable alternative. Who can give advise? Thanks,
Steven