4-Nonyl Phenol-13C6, 1mg

2,4,6-Trichlorophenol, 100 µg/ml, Methanol, 5ml

Naphthalene-d8, 100 µg/mL,toluene, 1mL

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