Certified Vial Kit, Low Adsorption (LA), 2 mL, pk of 100 volume 2 mL, amber glass vial (with marking spot), natural PTFE/silicone septa (with slit), thread for 9 mm; find Supelco-29654-U MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich.