Phenmedipham, 100µg/ml in MeOH, 5ml

Toxaphene Congeners (Parlar 26, 50 and 62), 2µg/ml in Nonane, 1,2ml

N-Nitrosodimethylamine, 1g

5-Methyl-N-phenyl-2-1H-pyridone [Pirfenidone],50mg