1. Disinfection and Sterilization

2. METHODS OF STERILISATION
There is a range of methods for cleaning equipment
Decontamination through disinfection to sterilisation.
Decontamination is the physical removal of infected material by washing or scrubbing
Disinfection is the killing of non sporing organisms
Sterilisation is the killing of all micro organisms including viruses, fungi and spores.
Increasingly filtration is used as a method of controlling transfer of infected material, for example the protection of ventilators.

3. Methods of Disinfection
1. Pasteurisation
20 minutes at 70°C or
10 minutes at 80°C or
5 minutes at 100°C
2. Chemical
formaldehyde or
70% alcohol or
%chlorhexidine or
2% gluteraldehyde or
10% hypochlorite solution or
hydrogen peroxide or
phenol

4. Methods of Sterilisation
Dry heat
150°C for 30 minutes
Moist heat (steam under pressure-autoclaving)
30 minutes at 1 atmosphere 122°C or
10 minutes at 1.5 atmospheres 126°C or
3 minutes at 2 atmospheres 134°C
Ethylene oxide
Gamma irradiation

5. The various labels which are used in medical products after sterilisation..