# Nordion (Sotera Health)

Source: https://nuclide.cc/companies/nordion/  
Nuclide record `nordion` (Company). Data CC BY-NC 4.0, attribute "Data from Nuclide (nuclide.cc)"; commercial use needs a licence.

## TL;DR

Nordion supplies most of the world's cobalt-60, which sterilises single-use bioprocess bags and medical devices and powers Gamma Knife units, and was the largest molybdenum-99 processor until Canada's NRU reactor stopped.

## Summary

Nordion, an Ottawa company owned by Sotera Health, sells cobalt-60 sources harvested from Canadian CANDU power reactors operated by Bruce Power and Ontario Power Generation, used for gamma sterilisation of medical products and single-use bioprocess consumables and for Gamma Knife radiosurgery. Until the NRU reactor at Chalk River ceased isotope production in 2016 it processed a large share of the world's molybdenum-99, and its exit reshaped the supply chain described in the reactor record.

## Fields

- Kind: Company
- Last checked: 2026-09-17
- Tags: manufacturing-wave
- HQ: Ottawa
- Type: radiopharma
- Website: https://www.nordion.com

## Sources

- Official website: https://www.nordion.com

## Connected records

- isotopes: [Molybdenum-99](https://nuclide.cc/isotopes/mo-99/)
- technologies: [Research reactors for medical isotopes (Mo-99, Lu-177, I-131)](https://nuclide.cc/technologies/research-reactor-isotope-production/)
- bottlenecks: [Molybdenum-99 supply](https://nuclide.cc/bottlenecks/b-mo99-supply/)
- fronts: [Isotope supply](https://nuclide.cc/fronts/f-isotope-supply/)
- roadmaps: [Isotope supply roadmap: reactor dependence → non-uranium production → accelerator-made actinium](https://nuclide.cc/roadmaps/isotope-supply-roadmap/)

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JSON: https://nuclide.cc/api/v1/entities/nordion.json