20ml Glass Vial with White Cap on Sale--Aijiren Vials for HPLC/GC. Aijiren’s 2ml vial has a size of 32*12mm, 2ml, screw mouth. It is equivalent in size to 11mm crimp top vials and 10-425 thread vials. 9mm screw vials can be used in any autosampler that uses 11mm crimp top vials and 10-425 screw vials.