We use excellent raw materials to make 8-425 2ml autosampler vials. High Quality 8-425 HPLC Vial for SHIMADZU. 2mL Standard Opening Vials. Our standard 2 mL vial is 12 mm in diameter, 32 mm in height, and has a 4.6 mm opening. The thread size on this vial is 8-425. Choice of clear or amber glass.