EPA Method 500 Series Internal Std #4

2,3,3',4,4'-Pentachlorobiphenyl, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 32598-14-4

2,5-Dichloroaniline, 500mg

2,2',6,6'-Tetrachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 15968-05-5