Use Thermo Scientific™ SureSTART™ 9 mm screw caps with screw vials that have a 9 mm opening, including our SureSTART 2 ml Glass Screw Vials and 2 ml polypropylene screw Microvials for <2 ml samples (Level 1). Select level 1 caps for chromatography approved, cost optimized products that are suitable for everyday analyses and compatible with all instrument types.

Choose from polypropylene caps with silicone/PTFE or rubber/TEF septa designed to reduce autosampler needle issues. Pre-slit and bonded septa options are available. Our AVCS™ caps incorporate advanced vial closure system technology to ensure optimal seal compression when closing a vial. Use AVCS screw caps with our SureStop™ vials for effective seals, consistent data, and increased sample throughput.