There are many different types of Autosampler Vials produced by Aijiren, the most well-known is Screw Neck HPLC Vials, Screw Vials can be applied to many different types of autosamplers. In the Screw Neck HPLC Vials, the 10mm Autosampler Vials used in the picture, the 10mm Autosampler Vials has good airtightness, large opening, and easy sample injection, which is very popular among customers.