Sterilization & Disinfection 
    Sterilization & Disinfection 
 Sterilization: 
    Is the killing or removal of all micro-organisims, 
 including bacterial spores, which are highly resistant.
 e.g.: 
 -                            o
   Sterilization by autoclave (121 c , 15psi).
 -
   Ethyl oxide gas for surgical instruments.
 -
   Filtration for intravenous solution.
 Classification of sterilization agents:
 1- Physical agents:    a- heat
            b- filtration
            c- radiation
 2- Chemical agents:
  
                     Classification of Sterilization Methods
                     Classification of Sterilization Methods
  Physical Sterilization                                              Chemical Sterilization
      Radiation        Filtration                                       Heat
      Direct Sun Light
  Non Ionizing Radiation                   Moist Heat                               Dry Heat
    Ionizing Radiation 
     Infrared Radiation                                                            Flaming
                                   Sterilization at a temp. Below 100Co
                                                                                         
                                                               o
                                          Sterilization at 100C                     Hot air 
                                   Sterilization at temp.    Above 100Co
                                                                                     oven
                                                                                   Incinerat
                                                                                      on
     :-Physical Sterilization
     :-Physical Sterilization