Certified 2ml chromatography vials with screw caps for lab use. 2021-12-14. Autosampler Vials 2ml with Caps, HPLC Vial,9-425 Clear Vial with 2ml Clear autosampler vial,12mm Diameter,32mm Height,9-425 screw top.Our vials with caps are widely used in standard HPLC and GC applications. Aijiren – Vial, screw top, clear, certified, 2 mL