Autosampler Vials 2ml with Caps, HPLC Vial,9-425 Clear Vial with Blue Screw Caps,Writing Patch,Graduation,White PTFE & Red Silicone Septa Fit for GC Sample Vial (500PCS, Brown) B08BTL6TRW. $210.27 $126.75. Color: Brown Features: 2ml sample vial are made of high quality borosilicic acid glass,low content of free ions,low coefficient of expansion