title: Source of gray residue in gas chromatograph injector liners, and how it can be prevented.
authors.forename: Dean
authors.initials: D
authors.lastname: Rood
mesh_terms: D002849:Chromatography, Gas / Q000379:methods*; D004340:Drug Contamination; D006108:Graphite; D011786:Quality Control
chemical_list: D006108:Graphite