Metolachlor ESA sodium salt, 100µg/ml in MeOH, 1ml

PCB No. 30, 100µg/ml in CY, 5ml

EPA Method 524.3 - Internal Standard

4,4'-Dichloro[13C12]biphenyl, 50.0µg/mL in Nonane/10% toluene, 1,2ml