VWR® AUTOSAMPLER VIALS, INSERTS, AND CLOSURES 6 VWR® autosampler vials, inserts, and closures | vwr.com VWR® CERTIFIED 9MM SCREW-THREAD VIAL AND CLOSURE CONVENIENCE KITS ‒ Lot-tested including HPLC and GC analysis for nine critical parameters ‒ Vial dimensions verified for height, diameter and bottom thickness