| Code | RSe-2 |
| Name, chemical formula | Sodium selenite(IV), Na2SeO3 |
| Form | aqueous solution |
| Radionuclidic purity | > 98.0% |
| pH | 7.0 ÷ 9.0 |
| Calibration | 7 days |
| Expiration | 28 days |
| Storage | 15°C ÷ 25°C |
| Specific activity | > 400 MBq/mg Se |
| Half life | 119.8 days |
| Availability | ~ 4 weeks advanced order |
