<prompt> Sterilization disinfection of blood spills is done by:FormaldehydeSodium hypochloriteTincture iodinePhenols  <response>: Halogens hypochlorites Cheap, effective and act by release of free chlorine and effective against viruses.Chlorine-releasing agents are chemicals disinfectants which are effective against blood-borne viruses and are rapid in action.They are considered the disinfectant of choice in the event of a spillage of blood or body fluid.Rapidly inactivated by organic matter.Chlorine-releasing agents must never be mixed with acids or used on spills of urine as chlorine gas will be released.Dilutions should not be mixed with any other cleaning agents, or with hot water but only made up with cold or tepid waterChlorine concentrations:Strength Uses1. 10,000 parts per million ppm Decontamination of spillages of blood andor body fluids stained with blood2. 1,000 parts per million ppm Disinfection of surfaces following contamination with other body fluids e.g commodes to be used after cleaning 