Dec 21, 2006 · headspace vial nd20 crimp top ultra low bleed ptfe septa clr China Gas Chromatography Crimp-top 20ml glass Headspace ND20 Vials With Aluminum gold Caps 10mm hole al crimp hs vials ultra low bleed ptfe septa-Crimp. 20mL Clear, Crimp Neck Headspace Vial, ND20 Flat Bottom, 22.5 Crimp Top 20mm Clear Type 1 Glass 20mL Headspace Autosampler Vials w/ Flat Bottom – 100/pk, CV2033 – Bundle