10 components: 10ug/ml each of Ametryn [CAS:834-12-8] ; Atrazine [CAS:1912-24-9] ; Simazine [CAS:122-34-9] ; Propazine [CAS:139-40-2] ; Terbutryn [CAS:886-50-0] ; Prometryn [CAS:7287-19-6] ; Cyanazine [CAS:21725-46-2] ; Atrazine-desethyl [CAS:6190-65-4] ; Atrazine-desisopropyl [CAS:1007-28-9] ; Terbuthylazine [CAS:5915-41-3] in Acetonitrile