Factory Directly Supply 2ml 9mm Screw Vials Supplier. 2ml amber autosampler vial, 12mm Diameter, 32mm Height, 9-425 screw top. Our vials with caps are widely used in standard HPLC and GC applications. The vials can be used on all common autosamplers due to their technical geometry, preferentially they are found on Aijiren, HTA, Shimadzu, Thermo