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Disinfectants
EPA Registered Disinfectants
List A -
Sterilant list 
List B
- Tuberculocides
List C - Anti HIV-1
List
D - Anti HBV and anti HIV 
Hyperlink
to a discussion of Decontamination Methods
Hyperlink
to a discussion of Liquid Disinfectants
Some general points:
Biological agents
listed according to their general resistance to germicides (most
resistant at the top).
- Prions
- Protozoa (encysted)
- Bacterial Spores
- Mycobacterium
- Viruses, enveloped
- Fungi
- Viruses, non-enveloped
Suspensions are much easier
to disinfect than surface adherent biologicals This is in part due
to the fact that contact time is generally shorter on surfaces (the
germicide evaporates)
Be careful.
Don't believe everything
the manufacturer claims for a disinfectant. Various factors affect
the ability of a chemical to kill rganisms. They are:
- Chemical nature of the
disinfectant
- Concentration of disinfectant
- Duration of treatment
- Nature of target
- Protein concentration
- pH
- Lipid concentration
- Temperature
- Other organics
Thus a manufacturer can claim
protperties for the disinfectant that apply only under certain,
carefully defined conditions. Under the conidtion of normal use
the disinectant may be of little value.
One must distinguish between
the ability of a chemical to inhibit division (bacteriostatic, for
instance) with its ability to kill (bacteriocidal)
Last update:
2 April, 2008
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