OCs Standard Solution 20 components (EPA 8081A)_x000D_ 1000ug/ml each of Aldrin [CAS:309-00-2] ; Alpha-HCH (alpha-BHC) [CAS:319-84-6] ; Beta-HCH (beta-BHC) [CAS:319-85-7] ; Gamma-HCH (Lindane) (gamma-BHC) [CAS:58-89-9] ; Delta-HCH (delta-BHC) [CAS:319-86-8] ; cis-Chlordane (alpha-Chlordane) [CAS:5103-71-9] ; trans-Chlordane (Gamma-Chlordane) [CAS:5103-74-2] ; 4,4'-DDD (TDE) [CAS:72-54-8] ; 4,4'-DDE [CAS:72-55-9] ; 4,4'-DDT [CAS:50-29-3] ; Dieldrin [CAS:60-57-1] ; Endosulfan-alpha [CAS:959-98-8]