Plastic Disk Check Sources
These are general purpose check sources used freely to check responses from multiple instruments, or may be contained inside Ludlum's mechanical check source holder that is attached directly to an instrument for convenience. The sources are sealed within a plastic disk.
| Source | Size (diameter × thickness) | Part Number |
|---|---|---|
| 0.25 µCi 137Cs | 2.5 cm × 3.2 mm (1.0 × 0.125 in.) | 01-5723 |
| 0.50 µCi 137Cs | 2.5 cm × 3.2 mm (1.0 × 0.125 in.) | 01-5203 |
| 1.0 µCi 137Cs | 2.5 cm × 3.2 mm (1.0 × 0.125 in.) | 01-5196 |
| 5.0 µCi 137Cs | 2.5 cm × 3.2 mm (1.0 × 0.125 in.) | 01-5186 |
| 10 µCi 137Cs | 2.5 cm × 3.2 mm (1.0 × 0.125 in.) | 01-5231 |
| 1.0 µCi 133Ba | 2.5 cm × 3.2 mm (1.0 × 0.125 in.) | 01-5818 |
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