| Radioactive Material | Category 1 (TBq) |
Category 1 (Ci) |
Category 2 (TBq) |
Category 2 (Ci) |
|---|---|---|---|---|
| Actinium-227 | 20 | 540 | 0.2 | 5.4 |
| Americium-241 | 60 | 1,600 | 0.6 | 16.0 |
| Americium-241/Be | 60 | 1,600 | 0.6 | 16.0 |
| Californium-252 | 20 | 540 | 0.2 | 5.4 |
| Cobalt-60 | 30 | 810 | 0.3 | 8.1 |
| Curium-244 | 50 | 1,400 | 0.5 | 14.0 |
| Cesium-137 | 100 | 2,700 | 1.0 | 27.0 |
| Gadolinium-153 | 1,000 | 27,000 | 10.0 | 270.0 |
| Iridium-192 | 80 | 2,200 | 0.8 | 22.0 |
| Plutonium-238 | 60 | 1,600 | 0.6 | 16.0 |
| Plutonium-239/Be | 60 | 1,600 | 0.6 | 16.0 |
| Polonium-210 | 60 | 1,600 | 0.6 | 16.0 |
| Promethium-147 | 40,000 | 1,100,000 | 400.0 | 11,000.0 |
| Radium-226 | 40 | 1,100 | 0.4 | 11.0 |
| Selenium-75 | 200 | 5,400 | 2.0 | 54.0 |
| Strontium-90 | 1,000 | 27,000 | 10.0 | 270.0 |
| Thorium-228 | 20 | 540 | 0.2 | 5.4 |
| Thorium-229 | 20 | 540 | 0.2 | 5.4 |
| Thulium-170 | 20,000 | 540,000 | 200.0 | 5,400.0 |
| Ytterbium-169 | 300 | 8,100 | 3.0 | 81.0 |