2ml 9-425 Screw Neck Autosampler Vials Standard wide opening 9-425 vials is compatible with all common auotsamplers, such as Aijiren, Thermo, Waters, Varian, etc. Vial bottom intergrated 0.2mL micro insert are available. Polypropylene vials which is chemically resistance can be used for AAS, capillary electrophoresis, ion chromatography, etc.