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Clinical Microbiology Reviews, Oct 1997, 597-610, Vol 10, No. 4
WA Rutala and DJ Weber
Hypochlorite has been used as a disinfectant for more than 100 years. It
has many of the properties of an ideal disinfectant, including a broad
antimicrobial activity, rapid bactericidal action, reasonable persistence
in treated potable water, ease of use, solubility in water, relative
stability, relative nontoxicity at use concentrations, no poisonous
residuals, no color, no staining, and low cost. The active species is
undissociated hypochlorous acid (HOCl). Hypochlorites are lethal to most
microbes, although viruses and vegetative bacteria are more susceptible
than endospore-forming bacteria, fungi, and protozoa. Activity is reduced
by the presence of heavy metal ions, a biofilm, organic material, low
temperature, low pH, or UV radiation. Clinical uses in health-care
facilities include hyperchlorination of potable water to prevent Legionella
colonization, chlorination of water distribution systems used in
hemodialysis centers, cleaning of environmental surfaces, disinfection of
laundry, local use to decontaminate blood spills, disinfection of
equipment, decontamination of medical waste prior to disposal, and dental
therapy. Despite the increasing availability of other disinfectants,
hypochlorites continue to find wide use in hospitals.
Copyright © 1997 by the American Society for Microbiology. All rights reserved.
Uses of inorganic hypochlorite (bleach) in health-care facilities
Division of Infectious Diseases, University of North Carolina School of Medicine, USA.
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