Home » News » Crimp Vials » Wheaton crimp top vials for HPLC and GC 8mm Chromatography Vials Supplier for HPLC--Lab Vials Glass Vials Lab 8-425 neck finish represents a hplc vials &gc vials the vials a diameter of 8 mm across the outside of the threads and a thread style of 425, Vials has clear and amber, Screw Cap in Lab most of the 2ml