Vials,screw top,20ml headspace vials price glass (vial only) volume 40 mL, Vials,screw top,20ml headspace vials price glass (vial only); Autoclavable,easy to maintain. A vial is used to store or as a closure type. 27186 Screw cap,solid top with PTFE liner,pkg 100,green melamine resin solid cap,F217