EPA Method 524.3 - Internal Standard

4-Methyldiphenylmethane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 620-83-7

N-Methyl-DL-alanine nitramine, 1000µg/mL, Solvent-methanol, Unit 1.1mL, # of units-1, Cas.no.

Parathion-methyl, 100µg/mL in Acetonitrile, 1ml