The 9-425 2ml screw top vial 12x32mm is the most popular screw top vial. It has a 'short' thread with a similar height to the aluminium caps, not as high as screw top vials with a narrow opening. High-quality vials, made from borosilicate clear glass Type 1, 33 expansion with great thermal resistance and inert. Uniform vial shape for maximum autosampler safety as well as in the use of inserts. Most of the existing instruments accept this vial.