40Ml Glass Vials with Screw Cap in Lab China N D24 (EPA) Screw Neck Vials,PP Caps and Septa for Storage Purposes 100pcs/pack nature PTFE/nature Silicone septa 22*3mm temperature resistant -60 -200 nature PTFE/nature Silicone septa 22*1.5mm temperature resistant -60 -200 white