D5-Acetochlor ESA sodium salt, 10mg

Chlorobenzuron, 10.0 µg/ml, Acetonitrile, 10ml

p-Xylene, 1000µg/ml in MeOH, 1ml

Perfluoro-n-[1,2-13C2]decanoic acid (in acetonitrile), 1.2ml x 50ug/ml, acetonitrile