Jul 7, 2022 · u Aijiren Tech Clear VOA Vials with 0.125 in. Septa clear borosilicate glass vial with 0.125 in. silicone/PTFE septum in a white PP cap Clear VOA Vials with 0.125 in. Septa are designed for water sample collection for volatile organic analysis (VOA). We've put 20 years of experience behind our most popular VOA vials.