Certified Kits, screw thread vials, 12 x 32 mm, 9 mm thread, unassembled, size 2 mL, clear glass vial, PTFE/silicone septum (with slit), septa bonded to cap. Vials - SepaChrom RA0614, 30.3mm Septa,Silicone cream/PTFE beige,3.2mm,for SCHOTT Screw Cap GL 32 Vial with integrated Micro-Insert,32 x 11.6mm,amber glass,”Base bonded”