TSO3 also uses vaporized hydrogen peroxide and ozone in the Sterizone VP4 https://www.cleanroomtechnology.com/news/article_page/Stryker_Corporation_acquires_sterilisation_tech_company_for_52m/160393 https://www.cleanroomtechnology.com/news/article_page/Stryker_Corporation_acquires_sterilisation_tech_company_for_52m/160393