EPA Method 524 & 624 - Internal Standard

2,4-Dimethylpyridine,neat,neat,100mg,

Paraoxon-ethyl, 10.0 µg/ml, Ethyl acetate, 10ml

Dibenzo[a,j]coronene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 190-72-7