National Scientific Target DP 9-425 Screw-Thread Vials National Scientific Septa Pack. Wide base helps eliminate tip-rocking and rolling and a molded polystryrile ring at the top of the flask helps prevent tip damage. Plastic cap has a two-way sealing function and can be locked down using the Thermo Scientific logo. Thermo Scientific Target DP 9-425 Screw-Thread Vials are designed to fit all standard thread racks including the new Tekmar Rack Manager so that the choice of racks and type can be determined on the production line. Provides a consistent platform for in situ sampling and allows efficient high-volume sampling with minimal spillage. Thermo Scientific Target DP 9-425 Screw-Thread Vials are designed to handle liquids so they can be used for general laboratory procedures. The wide-mouth design provides easy filling especially for large volume synthesized or when a funnel is used. The threaded opening provides easy addition of the septa and the removal of the septa. This feature reduces breakage and spillage by allowing the septa to lie flat at the bottom of the vial. National Scientific Target DP 9-425 Screw-Thread Vials National Scientific C4000-30 Septa Pack