Autosampler Vial, 2ml HPLC Vial,9-425 Amber Vial with Blue Screw Caps,Writing Patch,Graduation,White PTFE & Red Silicone Septa Fit for LC Sampler(300 pcs GTGvials.de - Glastechnik Gräfenroda GmbH Tests show that it is 60 % purer than „standard“ silicone/PTFE septa from For the convenient handling in the laboratory, autosampler vial caps