20 components: 10ug/ml each of Dieldrin [CAS:60-57-1] ; Endosulfan-beta [CAS:33213-65-9] ; Endrin [CAS:72-20-8] ; Endosulfan-alpha [CAS:959-98-8] ; Gamma-HCH (Lindane) [CAS:58-89-9] ; Heptachlor [CAS:76-44-8] ; Hexachlorobenzene [CAS:118-74-1] ; Heptachlor-endo-epoxide [CAS:28044-83-9] ; Pentachlorobenzene [CAS:608-93-5] ; Trifluralin [CAS:1582-09-8] ; 2,4'-DDD [CAS:53-19-0] ; 2,4'-DDT [CAS:789-02-6] ; 2,4'-DDE [CAS:3424-82-6] ; Heptachlor-exo-epoxide [CAS:1024-57-3] ; 4,4'-DDT [CAS:50-29-3] ; 4