1000 ug/mL each component in Hexane. Standard includes: n-Nonane, n-Decane, n-Dodecane, n-Tetradecane, n-Hexadecane, n-Octadecane, n-Nonadecane, n-Eicosane, n-Tetracosane, n-Hexacosane, n-Octacosane, n-Triacontane, n-Hexatriacontane, n-Docosane. Stores at room temperature. A NIST traceable reference material. 1.5mL ampule.