Use Thermo Scientific 11 mm Crimp/Snap Top Vials with snap caps or aluminum crimp seal closures. These high-quality 11mm glass vials are 2 mL, 12 x 32 mm and fit most brands of autosamplers. Made of superior quality 33 expansion borosilicate clear Type 1, Class A or 51A Type 1, Class B amber glass, they meet all requirements of US, EU, and JPN Pharmacopia.