1-(4-Chlorophenyl)urea, 100 µg/ml, Acetonitrile,

2,2',3,3',4,4',5',6-Octachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 42740-50-1

EPA Method 524 & 624 - Internal Standard

1-Chloronaphthalene