Jan 18, 2022 · PEKYBIO 2ml Autosampler Vial, 9-425 HPLC Vial with Writing Area and Graduation, Amber Sample Vial and 9mm Blue Screw Cap with Hole, Blue PTFE&White Silicone Septa, 100 of Pack 【2ml Amber Vial Material】: 9mm Screw Thread Autosampler Vials are made of USP Type 1, Class B Borosilicate Glass with very low expansion coefficient,conforming to USP