Fomesafen, 10.0 µg/ml, Ethyl acetate, 10ml

2,3',4,5,5'-Pentachloro-4'-methoxy[13C12]biphenyl, 1.2ml x 50ug/ml, toluene

Metazachlor ESA sodium salt, 100µg/ml in Acetonitrile, 1ml

2,2’-Biquinoline