500ug/mL each component in n-Pentane. Standard contains: n-Hexane (C6), n-Heptane (C7), n-Octane (C8), n-Decane (C10), n-Dodecane (C12), n-Hexadecane, n-Heneicosane (C21), n-Octacosane (C28), n-Pentatriacontane (C35). 1.5mL per ampule. Stores refrigerated. A NIST Traceable Reference Material
