EPA Method 8260B Internal Standard

Parathion methyl

4-Nitroanisole, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 100-17-4

4-Aminopyrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 17075-03-5