6 components: 10ug/ml each of 2,4-D [CAS:94-75-7] ; 2,4-DB [CAS:94-82-6] ; Dichlorprop [CAS:120-36-5] ; MCPA [CAS:94-74-6] ; MCPB [CAS:94-81-5] ; Mecoprop [CAS:93-65-2] in Acetonitrile