A: VHP Passbox sterilizes at very low temperatures making use of vaporized hydrogen peroxide, unlike classic steam sterilization that needs significant heat. The look and progress of a decontamination cycle typically takes place upon completion of your OQ. USP3 yet again supplies steerage on this subject as does PIC/S6 https://tailinscitech.wordpress.com/2026/02/09/vhp-sterilization-solutions-by-tailin-bioengineering-protecting-pharma-and-laboratory-environments/