Certified LCMS Certified Closure Type Screw Neck Cap Color Blue Dimensions 12 x 32 mm Format Total Recovery Vial. Material Clear Glass Seal Material preslit PTFE/Silicone Volume Capacity 1 mL Type Autosampler vial Includes Vial, Cap, & Septum. SKU: 186002639. Polypropylene 12 x 32 mm Screw Neck Vial, with Cap and Preslit PTFE/Silicone Septum