Bentazone, 10.0 µg/ml, Acetonitrile, 10ml

N-Nitroso-di-n-butylamine, 100 µg/ml, Methanol,

Secbumeton, 10.0 µg/ml, Acetonitrile, 10ml

2-(N-methylperfluoro-1-octanesulfonamido)-ethanol, 1.2ml x 50ug/ml, methanol