Certified Level 2, EPA Sample Pre-Cleaned 40 ml VOA Vials, Tray of 72. Cleaned to EPA Protocol Vial. Borosilicate glass; 0.125” Teflon®/silicon septa; open top. Suitable for sampling according to EPA 40 CFR 136 and CFR 141. Tray of 72 Tall Vials – 28 mm x 95 mm.