Over 40 Years of Service

STERIS AST has been providing contract sterilization services since 1972 and has continuously made investments to increase capacity, provide enhanced services and continue our ongoing commitment to Customer satisfaction. The following timeline details our more recent growth.



  • STERIS Isomedix and Synergy Health AST combine to form STERIS AST
  • Temecula, CA expands to include small and medium EO chambers
  • E-beam operations expand with new facility in Petaluma, CA and second accelerator in Saxonburg, PA


  • Acquired Bioster SpA and Ebster
  • Gamma processing expands in Netherlands and Germany
  • Marcoule, France gamma facility opens
  • Kuala Ketil, Malaysia facility expands to 4 EO chambers


  • Chester, NY adds third gamma irradiator
  • Acquired Biotest Laboratories
  • Acquired gamma and X-ray facility in Daniken, Switzerland


  • Acquired gamma facility in Rawang, Malaysia and EO facility in Kulim, Malaysia
  • Costa Rica operations expand with second E-beam accelerator and new EO operations


  • El Paso, TX (II) facility expands to four EO chambers
  • Radiation Technology Center opens in Libertyville, IL


  • El Paso, TX (II) EO facility opens
  • Suzhou, China EO facility opens


  • Synergy Health aquires Isotron
  • Acquired sites in South Africa, Asia and further expansion in Europe
  • Minneapolis, MN facility expands to 12 EO chambers


Acquired the following EO locations:

  • San Diego, CA
  • South Plainfield, NJ
  • Coventry, RI
  • Grand Prairie, TX
  • Waukegan, IL

Contact our team of experts to find out more about our Global Contract Sterilization Services