Hand washing
To scrub the hands for a surgery, water that can  be turned on and off without touching with the hands is needed, a cleaning liquid named "chlorhexidine" or "iodine wash", sterile cloth for drying the hands after washing, a sterile brush for hard washing and another sterile instrument for cleaning under the fingernails. Take off all watches, rings, and other jewels from the hands before washing. Wash the hands  and arms to the elbows again and again. Be strong and serious about the washing.  Use running water again and again to take off all soap. Keep hands up so water does not go from arms to hands. Dry the hands with the sterile cloth and put on surgical shirt or dress. Sterile means nothing on it that could cause a disease.