EPA Method 525 - Pesticide Standard

Ethoprophos, 100 µg/ml, Acetonitrile, 1ml

6-n-Heptylnaphthalene-2-carboxylic acid, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 66473-01-6

Fenson, 100 µg/ml, Ethyl acetate, 5ml