The Organic series consists of clear and amber glass vials with solid or open top closures. The closed-top closures have Teflon® faced 14B white styrene-butadiene rubber liners and the open-top closures have a Teflon faced silicone septa assembled in the cap. The cap material is black phenolic; the cap and the liners are autoclavable. With all the organic vials, Teflon and type 1 glass are the only surfaces that will make contact with your sample. This sample vial and closure combination provides an extremely inert and chemically resistant environment for harsh, sensitive and reactive samples.