Polypropylene 12 x 32 mm Screw Neck Vial, with Cap and Preslit PTFE/Silicone Septum, 700 µL Volume, 100/pk. Ensure all your solvents, solutions, and samples are stored safely within a chemically inert environment with the Polypropylene Screw Neck Vial, with Cap and Preslit PTFE/Silicone Septum.