54 components at 2000ug/mL each in P/T Methanol. CRM contains: Bromoform, Carbon tetrachloride, Chloroform, Chlorodibromomethane, Dichlorobromomethane, 1,1-Dichloroethane, 1,2-Dichloroethane, 1,1-Dichloroethylene, trans-1,2-Dichloroethylene, Dichloromethane, 1,2-Dichloropropane, cis-1,3-Dichloropropylene, trans-1,3-Dichloropropylene, 1,1,2,2-Tetrachloroethane, 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, Benzene, Bromobenzene, Bromochloromethane, sec-Butylbenzene, Chlorobenzene, 4-Chlorotoluene, Dibromomethane, 1,2-Dichlorobenzene, 1,3-Dichlorobenzene, 1,4-Dichlorobenzene, 2,2-Dichloropropane, Ethylbenzene, 1-Methyl ethyl benzene, Tetrachloroethylene, Toluene, 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, Trichloroethylene, o-Xylene, Hexachlorobutadiene, Naphthalene, 2-Chlorotoluene, 1,2-Dibromoethane, cis-1,2-Dichloroethylene, m-Xylene, Styrene, 1,2,3-Trichloropropane, 1,2,4-Trimethylbenzene, n-Butylbenzene, tert-Butylbenzene, 1,2-Dibromo-3-chloropropane, 1,3-Dichloropropane, 1,1-Dichloropropylene, 4-Isopropyltoluene, n-Propylbenzene, 1,1,1,2-Tetrachloroethane, 1,3,5-Trimethylbenzene, p-Xylene. Stable for at least 4 years from manufacturing. A NIST Traceable, ISO34 CRM.