2ml clear vial is 8-425 screw thread, 9mm short Thread and 10-425 widely vial is mainly used for liquid chromatography and gas chromatography analysis. Buy glass laboratory vials for hplc Aijiren. ND9mm Screw Thread Autosampler Amber Lab Vials are made of clear Type 1, Class A Borosilicate Glass with a writable label for sample identification. 2.