USP3 and PIC/S5 listing further products to be accomplished in the OQ including cleaning and leak screening. Decontamination cycle enhancement happens once the completion on the OQ which is discussed in detail in part 6. In healthcare, VHP sterilization is useful for decontaminating running rooms, isolators, and clinical units. https://directory4search.com/listings13506536/vhp-sterilization-no-further-a-mystery