Each individual cycle of the VHP reduced-temp sterilizer is characterised by the type of equipment that may be processed in that cycle. One example is, the non-lumen cycles can't be used to sterilize a lumened device or a flexible scope. Modern day VHP passboxes incorporate several security mechanisms together https://tailinscitech.weebly.com/blog/vhp-sterilization-solutions-by-tailin-bioengineering-protecting-pharma-and-laboratory-environments