Iso9001 amber 2ml vials with caps for sale for HPLC Iso9001 amber hplc vial caps with high quality for HPLC The 2ml HPLC Screw Vials are made from clear/ amber, Type I borosilicate and 33 expansion glass.2ml Amber HPLC Screw Vials with unique thread design ensures consistent seal and can be reused, not volatile, easy to use, Reduce the chances of bent or broken needles during sampling.