USP3 and PIC/S5 list extra items to get finished during the OQ which include cleaning and leak tests. Decontamination cycle enhancement occurs once the completion of your OQ and is mentioned intimately in part 6. The VHP decontamination cycle will involve four key ways: Conditioning, Gassing, Decontamination, and Aeration. https://tailinscitech.wordpress.com/2026/04/02/why-vaporized-hydrogen-peroxide-sterilization-matters-tailin-bioengineerings-approach-to-modern-disinfection/