Metolachlor (13C6,99%) 100µg/mL in Nonane, 1,2ml

2,3,4,4'-Tetrachlorobiphenyl (60)

PAH Mix 525, 100µg/mL in Acetone, 1ml

EPA Method 537 Native Primary Std (br/l mix), 2µg/ml in MeOH, 1,2ml