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Appl Environ Microbiol. 1962 November; 10(6): 538-541

Effect of Bromide-Hypochlorite Bactericides on Microorganisms1

Lewis Shere, Maurice J. Kelley and J. Harold Richardson

Research Laboratories, The Diversey Corporation, Chicago, Illinois

ABSTRACT

A new principle in compounding stable, granular bactericidal products led to unique combinations of a water-soluble inorganic bromide salt with a hypochlorite-type disinfectant of either inorganic or organic type. Microbiological results are shown for an inorganic bactericide composed of chlorinated trisodium phosphate containing 3.1% "available chlorine" and 2% potassium bromide, and for an organic bactericide formulated from sodium dichloroisocyanurate so as to contain 13.4% "available chlorine" and 8% potassium bromide. Comparison of these products with their nonbromide counterparts are reported for Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Streptococcus lactis, Aerobacter aerogenes, and Proteus vulgaris. Test methods employed were the Chambers test, the A.O.A.C. Germicidal and Detergent Sanitizer-Official test, and the Available Chlorine Germicidal Equivalent Concentration test. The minimal killing concentrations for the bromide-hypochlorite bactericides against this variety of organisms were reduced by a factor 2 to 24 times those required for similar hypochlorite-type disinfectants not containing the bromide.

FOOTNOTES

1 Presented at the 62nd Annual Meeting of the American Society for Microbiology, May 6-10, 1962, Kansas City, Mo.

Appl Environ Microbiol. 1962 November; 10(6): 538-541






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