EPA Method 551.1 Internal Standard

4'-Fluoro-2,2',3,3',4,5,5',6,6'-nonabromodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 876310-29-1

2,4-Dichlorobiphenyl (BZ-8)

Sintofen, 25mg