After a successful completion of the pre-cleaning, washing and disinfection cycle, the medical devices are being unloaded at the clean zone. The following step is to check and maintain the instruments after which the instrument sets are being prepared and packed for the operation theatre. Each set contains a product label which is being taken out in the operation room and being documented in the patient file. Once this has been done, they are being loaded into the sterilizer. Products that are being used at the clean zone are heat sealer machines, packing tables, roll holders, paper trolleys, open transport trolleys, height adjustable transport trolleys and loading trolleys, instrument trays and baskets and sterilization / monitoring products.