Reference Sources for Well Detectors
Our beta and gamma radiation test tube sources are designed for use as reference sources in well detectors or clinical instruments. Each source is constructed using a capped 12 mm x 75 mm polypropylene tube. The source material is deposited in the bottom of the tube and sealed with epoxy. All beta and gamma test tube sources have an uncertainty of ± 20% of the labeled activity unless calibrated (± 5%) for an additional cost. All activities are NRC exempt. Beta sources are not available for calibration.
| Nuclide | Minimum Activity | Maximum Activity |
|---|---|---|
| Barium 133 | 0.1 µCi (3.7 kBq) | 10 µCi (370 kBq) |
| Cadmium 109 | 0.1 µCi (3.7 kBq) | 10 µCi (370 kBq) |
| Cesium 137 | 0.05 µCi (1.85 kBq) | 10 µCi (370 kBq) |
| Cobalt 57 | 0.1 µCi (3.7 kBq) | 100 µCi (3700 kBq) |
| Cobalt 60 | 0.05 µCi (1.85 kBq) | 1 µCi (37 kBq) |
| Europium 152 | 0.1 µCi (3.7 kBq) | 1 µCi (37 kBq) |
| Iodine 125 | 0.1 µCi (3.7 kBq) | 1 µCi (37 kBq) |
| Manganese 54 | 0.1 µCi (3.7 kBq) | 10 µCi (370 kBq) |
| Sodium 22 | 0.1 µCi (3.7 kBq) | 10 µCi (370 kBq) |
| Strontium 90 | 0.05 µCi (1.85 kBq) | 0.1 µCi (3.7 kBq) |
| Thallium 204 | 0.1 µCi (3.7 kBq) | 10 µCi (370 kBq) |
| Zinc 65 | 0.1 µCi (3.7 kBq) | 10 µCi (370 kBq) |
