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GCMS-FID Split question

Question asked by chog on Mar 14, 2019
Latest reply on May 22, 2019 by james_jenkins

Hi I had a question about GC MS Split (gc to FID/MS).  I have a thermo splitter that has no auxillary flow to counteract the ms vaccuum, but want to change out the capillaries that come recommended with the splitter. The recommended capillary dimensions for the FID Capillary is 60cm with 170um /0.363 mm and the MS capillary is 240cm with 150um/0.363 mm.  I was wondering if I could uses different capillaries and if so if there was an equation I should use to calculate compatibilities(dimensions/lengths).