By Anonymous on Tuesday, December 23, 2003 - 11:05 pm:
Does anyone use DMSO as matrix with headspace 7694 and a 6890 (FID)? We get some problems with our FID and cleaning our transfert line. Ideas?
Thanks
By Rodney on Monday, December 29, 2003 - 06:51 am:
Are you using a packed column FID flame tip or a capillary flame tip?
I would use a 0.020" ID tip instead of the capillary flame tip for keeping your flame lit with large amounts of DMSO eluting.
Fused silica deactivated transfer lines should be the norm unless you are using very basic liquids for your headspace work.
Never use basic solutions to clean FS deactivated tubing. Be sure to keep your transfer line temperature elevated so your DMSO will elute.
Rodney George
Senior Research and Development Scientist
Gas Separations Research
Supelco
595 North Harrison Road
Bellefonte, PA 16823
814-359-5737 voice
814-359-5459 fax
rgeorge@sial.com