| Aktiva substanser | Betyg | Bibliogr. | Expandera | |
|---|---|---|---|---|
| 1 | Koboltradioisotoper | 100 | + | |
| 2 | Jodradioisotoper | 68 | + | |
| 3 | Kalciumradioisotoper | 55 | + | |
| 4 | Kromradioisotoper | 38 | + | |
| 5 | Tritium | 36 | + | |
| 6 | Natriumradioisotoper | 26 | + | |
| 7 | Indiumradiosotoper | 25 | + | |
| 8 | Kolradioisotoper | 24 | + | |
| 9 | Talliumradioisotoper | 15 | + |