Open-Top Screw Caps

Use Thermo Scientific™ SureSTART™ 20 mm Crimp Caps with crimp vials that have a 20 mm opening, including our SureSTART 10 mL and 20 mL Glass Crimp Top Headspace Vials (Level 2). Select Level 2 products for high-throughput applications, when robustness and reproducibility are key. Choose from aluminum and magnetic steel caps with silicone/PTFE or butyl/PTFE septa of various hardness values designed to reduce autosampler needle issues. Caps with Pressure Release technology will split to allow the safe release of high internal vial pressures. Use Thermo Scientific™ Manual or Electronic Crimpers and Decappers for easy application and removal of crimp caps.

Use Thermo Scientific™ SureSTART™ 11 mm Snap Caps with snap vials that have an 11 mm opening, including our SureSTART 2 mL Glass Snap Vials and 2 mL Polypropylene Snap 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. We offer soft polyethylene caps with double snap functionality that guarantees a tight seal. Our snap caps include polyethylene septa designed to reduce autosampler needle issues.

Use Thermo Scientific™ SureSTART™ 11 mm Snap Caps with snap vials that have an 11 mm opening, including our SureSTART 2 mL Glass Snap Vials, 1.5 mL Total Recovery Glass Snap Vials, High Recovery Glass Snap Vials, and Glass Snap Microvials for <2 mL samples (Level 3). Select Level 3 products for ultimate performance and sensitivity from your methods, while maintaining the highest levels of sample security and integrity. Choose from soft polyethylene caps with double snap functionality that guarantees a tight seal. Our snap caps include all-purpose silicone/PTFE septa of various hardness values designed to reduce autosampler needle issues. Pre-slit septa options are available for those who want septa that prevent vial-overfilling issues and re-seal well enough to avoid sample evaporation.