2,4,4'-Trichloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

N-Nitrosodiethylamine, 100 µg/ml, Methanol, 5ml

D5-Propachlor ESA sodium salt, 100µg/ml in Acetonitrile, 1ml

N-Acetylaminomethylphosphoric Acid (>90%), 250mg