USP3 and PIC/S5 checklist additional goods to become done while in the OQ such as cleaning and leak screening. Decontamination cycle growth takes place following the completion of your OQ and is particularly reviewed in detail in section 6. Clean sterile air or nitrogen is circulated just after decontamination. https://tailinscitech.weebly.com/blog/vhp-sterilization-solutions-by-tailin-bioengineering-protecting-pharma-and-laboratory-environments