National Scientific Stopper 20 mm Gray Bromobutyl 100/Pack

National Scientific 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 2). Select level 2 products for high throughput applications, when robustness and reproducibility are key. Choose from various pack sizes of low permeability, 3 mm thick bromobutyl rubber stoppers designed to provide an effective alternative to crimp caps.

Thermo Scientific performance level 2 stoppers are manufactured and tested to ensure low bleeding, robustness, and reproducibility of results for your routine GC-MS and LC-MS analyses.

level 2 surestart 20 mm stoppers are manufactured from low permeability bromobutyl rubber, making them suitable for low temperature gas analysis and low volatility gas storage.

- SPCM (Additional S&H Or Hazmat Fees May Apply)