4,4'-DDE, 10.0 µg/ml, Ethyl acetate, 10ml

n-Pentadecane-d32, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 36340-20-2

9,10-Dihydrobenzo[a]pyren-7(8H)-one, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 3331-46-2

Internal Standard