11mm Snap Neck Glass Vial with Cap and Septa. • Widely used in HPLC applications, universally usable vials for almost autosamplers, include the one with robotic handing. • Snap vials can be closed with either snap caps or crimp caps. • Snap caps can be easy as push-on, pull-off by hand. • Clear glass vials–made from USP Type I, Class.