Chromatography Vials. Our range of products include 1.8mL Glass Vial Clear, with 9mm Blue Screw Cap, Aluminium Cap with Head Space Septa, Clear Micro-Insert Vial, 20mm Glass Vial, Aluminium Cap with Silicon White/PTFE White, 20ml Crimp Headspace Clear Vial, Flat Bottom and Colpak 10ml Crimp Headspace Clear Vial, Flat Bottom.