33 components: 1000ug/ml each of Chloroform [CAS:67-66-3] ; cis-1,2-Dichloroethene [CAS:156-59-2] ; Chlorobenzene [CAS:108-90-7] ; Chloromethane [CAS:74-87-3] ; 1,2,4-Trichlorobenzene [CAS:120-82-1] ; Dibromochloromethane [CAS:124-48-1] ; Dichloromethane [CAS:75-09-2] ; 1,2-Dichloroethane [CAS:107-06-2] ; 1,2-Dibromoethane [CAS:106-93-4] ; Ethylbenzene [CAS:100-41-4] ; 1,2-Dichlorobenzene [CAS:95-50-1] ; 1,2-Dichloropropane [CAS:78-87-5] ; Hexachloro-1,3-butadiene [CAS:87-68-3] ; 1,3-Dichloroben