crimp top 20ml headspace vials Perkin Elmer Headspace vial, beveled top, rounded bottom size 20 Headspace vial, beveled top, rounded bottom size 20 mL, clear glass (with graduations and marking spot), for PerkinElmer, Tekmar; find Supelco-SU860135 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sig