Wheaton® White Open Top Polypropylene Screw Caps with PTFE-Faced Silicone Septa
Wheaton® white polypropylene screw caps feature an open top screw caps are designed for vials and bottles which require syringe sampling access. Open top septa caps feature a bonded PTFE faced silicone liner. Open top design of these bottle caps make them ideal for storage and retrieval of volatile solvents, sensitive compounds and corrosive chemicals. Color: White.