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Influence of drying time on prewetted disinfectant towelettes to disinfect glass surfaces

Published:December 10, 2019DOI:https://doi.org/10.1016/j.ajic.2019.11.006

      Highlights

      • Prewetted disinfectant towelettes dried on glass before the products’ contact time.
      • Sodium hypochlorite and hydrogen peroxide killed the pathogen on glass quickly.
      • Quaternary ammonium compounds were less effective than sodium hypochlorite and hydrogen peroxide.
      • Quaternary ammonium compounds reduced the pathogen after drying and contact time.
      The use of prewetted disinfectant towelettes in health care settings proves challenging because they may dry quickly, reducing disinfection. This study examined the drying time of various commercial disinfectant towelettes and the efficacy of these towelettes over time to eliminate Staphylococcus aureus from glass surfaces. This study confirms that these disinfectants dry quickly. Further disinfection after drying time on glass is minimal, but dependent on the type of disinfectant.

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      1. Environmental Protection Agency. Standard operating procedure for quantitative petri plate methods (QPM) for determining the effectiveness of antimicrobial towelettes against vegetative bacteria on inanimate, hard, non-porous surfaces. 25 March 2014. SOP Number MB-33-00. Available from: https://www.epa.gov/sites/production/files/2014-12/documents/mb-33-00.pdf. Accessed December 3, 2019.