A: VHP Passbox sterilizes at lower temperatures applying vaporized hydrogen peroxide, contrary to classic steam sterilization that requires substantial heat. Microbiological checking involves working with settling plates/swabs on completion of the decontamination cycle after which periodically right until the following decontamination cycle is scheduled. VHP sterilization in OEB4/OEB5... https://thesocialcircles.com/story7504737/rumored-buzz-on-vhp-sterilization-process