LC/GC Certified Vials are UV-tested by HPLC. The HPLC test Vials are available in three closure types: crimp, snap, and screw cap. Autosampler Vials 2ml with Caps, HPLC Vial,9-425 Clear Vial with . 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 China Lab 2ml 9mm Glass HPLC Gc Autosampler Vial with Cap. Model NO. V917+SC9291. Certification. CE, ISO. Material.