Vials, 2 mL, open-top screw cap, R.A.M.™ (9 mm) convenience kit with closures with septa, unassembled, pkg of 100 volume 2 mL, clear glass vial (with graduated marking spot), PTFE/silicone septum; find Supelco-29065-U MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich.