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Calibration sources
- Radiation
- Alpha or beta
- Source formats
- Point sources and wide areas: discs, planchets, rectangles or squares
- Use
- Calibration of alpha spectrometers and contamination monitors

Bild: Orano LEA
Calibration sources
Certified gamma and X-ray sources from LEA/Orano – point sources (EGS, EXS) and sources in vegetable, resin, charcoal-filter and paper matrices for calibration and checks of spectrometers and radiation protection instruments. The 12ML01 mixture is available as an EGS point source.
Download product sheet (PDF)All values with references – for tender documents
Specifications checked against the manufacturer’s documents on 2026-10-16
The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.
| Radiation | Gamma and X-rays1 |
|---|---|
| Example nuclides, EGS | Co-57, Co-60, Cs-137, Eu-1522 |
| Standard radionuclides, EXS | Fe-55 and Cd-1093 |
| Catalog container volumes, EGR | 15, 50, 250, 450, 500, 1000 or 3000 ml4 |
| Active diameter, standard EGS A/E | 3 mm2 |
|---|
| Source formats | Point sources; vegetable, resin, charcoal-filter and paper matrices1 |
|---|---|
| Matrix, EGR | Thermosetting resin; sealed source with water-equivalent activity4 |
| Use | Calibration and verification of spectrometers and radiation-protection instruments1 |
|---|---|
| Catalog activities, EGS A/E | 4, 40, 400 or 700 kBq, depending on nuclide2 |
| ISO 2919, EGS A/E | C111112 |
| ISO 2919, EGS B/V | C222122 |
| X-ray flux, catalog EXS B | 16,000 photons/s over 4π sr3 |
The data comes from the manufacturer’s published documents. Manufacturers may change specifications; the current configuration and performance are confirmed in the quotation.
The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

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