1.1 ,This guide is based on a standardized test soil correlating to coagulated blood suitable for screening tests and the evaluation of the cleaning efficiency of washer-disinfectors used for reprocessing of surgical instruments. This guide strictly deals with cleaning and does not describe any methods that are related to disinfection. See Referenced Documents D5343, D4008, D4265, D2960, and D3050 in Section 2 for additional information.