1/9/2020 · Aijiren's 2ml Amber Glass Vial can be divided into several different types according to the diameter of the bottle mouth, 8mm, 9mm, 10mm, 11mm. Among them, 11mm can be divided into Crimp Top Vials and Snap Top Vials.8mm, 9mm, and 10mm are screw threads, because the type of screw thread is very convenient to operate and is compatible with most autosamplers.