Washer/disinfectors are used in medical as well as pharmaceutical applications to either prepare goods for later autoclaving (e.g. surgery instruments to remove residues like blood and protein) or to disinfect (semi sterilize) goods for later use.
In case of steam sterilization the surface has to be properly cleaned. Without proper cleaning, sterilization is not possible. A clean and debris-free surface is required during steam sterilization allowing steam to contact all instrument surfaces. It has been proven that bacteria can survive a steam sterilization cycle if they are protected under dried debris. When the washer/disinfection cycle is complete, the instruments can be inspected, placed in sterilization pouches or wraps and then properly sealed and processed in the sterilizer.