EPA 16 PAH Cocktail (13C,99%), 5µg/ml Nonane,1,2ml

D6-Metolachlor, 100µg/ml in Acetonitrile, 1ml

8:2 Di-PAPS, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 678-41-1

EPA Method 500 Series Internal Std #4