EPA Method 552 Internal Standard

4,4'-Dibromodiphenyl ether, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 2050-47-7

EPA Method 505 Pesticides

1,2,7,8-Tetrachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene