20 components: 1000mg/l each of 2-Chlorophenol [CAS:95-57-8] ; 3-Chlorophenol [CAS:108-43-0] ; 4-Chlorophenol [CAS:106-48-9] ; 2,3-Dichlorophenol [CAS:576-24-9] ; 2,4-Dichlorophenol [CAS:120-83-2] ; 2,5-Dichlorophenol [CAS:583-78-8] ; 2,6-Dichlorophenol [CAS:87-65-0] ; 3,4-Dichlorophenol [CAS:95-77-2] ; 3,5-Dichlorophenol [CAS:591-35-5] ; 2,3,4-Trichlorophenol [CAS:15950-66-0] ; 2,3,5-Trichlorophenol [CAS:933-78-8] ; 2,3,6-Trichlorophenol [CAS:933-75-5] ; 2,4,5-Trichlorophenol [CAS:95-95-4] ; 2,