DESCRIPTION
Use Thermo Scientific™ SureSTART™ 20 mm Stoppers with crimp vials that have a 20 mm opening and a secure push fit, including our SureSTART 20 mm Crimp Headspace Vials (Level 1). Select Level 1 stoppers for chromatography approved, cost optimized products that are suitable for everyday analyses and compatible with all instrument types. Choose from various pack sizes of low permeability, 3 mm thick bromobutyl rubber stoppers designed to provide an effective alternative to crimp caps.