Autosampler Vials 2mL, HPLC/GC Sample Vials, with Writing Area . Top Type, 9-425 Screw Cap ; Volume, 2mL ; Color, Amber ; Pre-Slit Septa, No ; Septa, White PTFE & Red Silicone Vials. in glass, septa and caps, we developed Verex HPLC / GC vial For Vial Inserts for Standard Opening Crimp-Top Vials, use 5 mm Diameter Inserts, see p. 39.