EPA Method 504 - EDB & DBCP

2,2'-Dimethylbiphenyl, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 605-39-0

Hexachlorobenzene-13C6, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 93952-14-8

2,2,3,5-Tetrachlorobiphenyl (BZ-44)