Vials, screw top with polypropylene open-top cap, pre-assembled . Vials, screw top with polypropylene open-top cap, pre-assembled, pkg of 100 volume 15 mL, amber glass vial, O.D. × H 21 mm × 70 mm, PTFE/silicone septum; GC Autosampler Vials. analysis is the autosampler vial.