Propachlor-oxalamic acid (OA), 10mg

5H-Perfluoropentanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 376-72-7

Chlorpyriphos-ethyl, 100µg/ml in Acetonitrile, 5ml

Arsenic (As)