EPA Method 8260 - Purgeable Internal Standard

Hafnium (Hf)

2,2',3,3',4,4',5',6-Octachlorobiphenyl, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 42740-50-1

2,2’,3,4’,5,5’-Hexachlorobiphenyl