Sterigenics International LLC, a global provider of contract sterilization, gamma technologies and medical isotopes, and a portfolio company of Warburg Pincus and GTCR, has acquired Nelson Laboratories, Inc., the largest U.S. provider of life-cycle microbiology testing services for the medical devices, pharmaceutical and tissue industries. Terms of the transaction were not disclosed.

Nelson Labs employs 570 professionals, including more than 300 scientists and 60 registered and specialist microbiologists.  With 85 labs running out of five corporate buildings in Salt Lake City, they work with more than 3,000 client companies in 57 countries, providing more than 400 microbiological and analytical tests.

All Nelson Labs operations will remain in Salt Lake City and be combined with Sterigenics’ existing microbiological and analytical testing and consultancy - SteriPro® Labs.  Moving forward, the combined entities will go to market under the Nelson Labs brand name and operate as a standalone business unit within Sterigenics International.  Jeffery Nelson will serve as President of Nelson Labs and together, with the Sterigenics contract sterilization business, will create the largest fully integrated global sterilization and lab services firm in the world.

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