A method and a system for resolution conversion of textual content or Magnetic Ink Character Recognition content in an image are provided. The cleaning apparatus comprises a web supply for supplying a cleaning web therefrom and a web receiver for receiving the web. A global optimization is then performed, wherein substitutions of both device type and device size are performed on the machine representation in each iteration. In one embodiment, the gaseousvaporous sterilant is vaporized hydrogen peroxide and the chemistry of the reactive chemical unit includes thiosulfate and iodide.