| Model | radioactive | Standard | USNRC 30.71 | half life | radiation | energy | branch road | source |
| Ba-133 | Barium133 | 1 | 10 | 10.7 y | γ | 81 | 32.8 | |
| Cd-109 | Cadmium109 | 1 | 10 | 453.4 d | γ | 88 | 3.8 | |
| Cs-137 | Cesium137 | 1 & 5 | 10 | 30.1 y | γ | 32.2 | 3.7 | |
| Co-57 | Cobalt57 | 1 | 100 | 270 d | γ | 14.4 | 9.5 | |
| Co-60 | Cobalt60 | 1 | 1 | 5.3 y | γ | 1173.2 | 99.9 | |
| Mn-54 | Manganese54 | 1 | 10 | 312.2 d | γ | 834.8 | 99.9 | |
| Po-210 | polonium210 | 0.1 | 0.1 | 138.4 d | α | 5304.5 | 99.9 | |
| Na-22 | sodium22 | 1 | 10 | 2.60 y | γ | 511 | 179.8 | |
| Sr-90 | Strontium90 | 0.1 | 0.1 | 28.5 y | β | 546 | 100.0 | Y-90 |
| Tl-204 | 204 | 1 | 10 | 3.8 y | β | 763.4 | 97.4 | |
| Zn-65 | zinc65 | 1 | 10 | 243.8 d | γ | 1115.5 | 50.8 | |
| Pb-210 | 0.1 | 0.1 | 20.4 y | γ | 46.5 | 4.0 |
|
exempt radioactive sources
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exempt radioactive sources
Product model:
Brief description:Check Sources for Energy Calibration The following sources are mounted in 2.5 cm diameter sealed plastic pans, require no USNRC and state licenses, and have no special storage or disposal requirements.

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Detailed introduction
Check source for energy calibration
- The following sources are housed in 2.5 cm diameter sealed plastic pans, require no USNRC and state permits, and have no special storage or disposal requirements.
- These sources are manufactured by Spectrum Techniques, Oak Ridge, TN, U.S.A.
| RSS3 | A set of three solid-state sources:Po-210 (0.1 µCi)、Sr-90 (0.1 µCi) and Co-60 (1.0 µCi) |
| RSS5 | A set of five solid-state sources:Po-210 (0.1 µCi)、Sr-90 (0.1 µCi)、Tl-204 (1 µCi)、Co-60 (1 µCi) and Cs-137 (5 µCi) |
| RSS8 | A set of eight gamma sources for scintillation spectroscopy determination:Ba-133(1μCi)、Cd-109(1μCi)、Co-57(1μCi)、Co-60(1μCi)、Cs-137(1μCi)、Mn-54(1μCi)、Na-22(1μCi)、Cs-137(0.5μCi) andZn-65(1μCi) mixed source |
radioactive decay diagram +
Ordering information +
US customers ordering:
Model
Description
RSS3
A set of three solid-state sources:Po-210 (0.1 µCi)、Sr-90 (0.1 µCi) and Co-60 (1.0 µCi)
RSS5
A set of five solid-state sources:Po-210 (0.1 µCi)、Sr-90 (0.1 µCi)、Tl-204 (1 µCi)、Co-60 (1 µCi) and Cs-137 (5 µCi)
RSS8
A set of eight gamma sources for scintillation spectroscopy determination:Ba-133(1μCi)、Cd-109(1μCi)、Co-57(1μCi)、Co-60(1μCi)、Cs-137(1μCi)、Mn-54(1μCi)、Na-22(1μCi)、Cs-137(0.5μCi) andZn-65(1μCi) mixed source
Non-US customers ordering:
Model
Description
RSS3EXP
A set of three solid-state sources:Po-210 (0.1 µCi)、Sr-90 (0.1 µCi) and Co-60 (1.0 µCi)
RSS5EXP
A set of five solid-state sources:Po-210 (0.1 µCi)、Sr-90 (0.1 µCi)、Tl-204 (1 µCi)、Co-60 (1 µCi) and Cs-137 (5 µCi)
RSS8EXP
A set of eight gamma sources for scintillation spectroscopy determination:Ba-133(1μCi)、Cd-109(1μCi)、Co-57(1μCi)、Co-60(1μCi)、Cs-137(1μCi)、Mn-54(1μCi)、Na-22(1μCi)、Cs-137(0.5μCi) andZn-65(1μCi) mixed source
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