| Nr. | Kongener |
|---|---|
| 1 | 2,4,4'-Trichlorbiphenyl (PCB 28) |
| 2 | 2,2',5,5'-Tetrachlorbiphenyl (PCB 52) |
| 3 | 2,2',4,5,5'-Pentachlorbiphenyl (PCB 101) |
| 4 | 2,2',3,4,4',5'-Hexachlorbiphenyl (PCB 138) |
| 5 | 2,2',4,4',5,5'-Hexachlorbiphenyl (PCB 153) |
| 6 | 2,2',3,4,4',5,5'-Heptachlorbiphenyl (PCB 180) |