Foramsulfuron, 100 µg/ml, Acetonitrile, 5ml

Sodium perfluoro-1-nonanesulfonate, 1.2ml x 50ug/ml, methanol

Perfluoro-n-[1,2,3,4-13C4]butanoic acid, 50µg/ml in MeOH, 1,2ml

N-Nitrosodimethylamine-d6, 10mg