2,4-D n-butyl ester

N-methylperfluoro-1-octanesulfonamidoacetic acid, 50µg/ml in MeOH, 1,2ml

17a-Ethinylestradiol, 100 µg/ml, Methanol, 1ml

Trichloroacetic acid, 100 µg/ml, Acetonitrile, 1