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how do we calculate log reduction in microbiology. From this perspective D-values can be understood as roughly analogous to half lives of radioactive substances however a half life involves a reduction of 50 rather. Log reduction is a mathematical term that is used to express the relative number of living microbes that are eliminated by disinfection.
1000 bactreia 2log reduction 1000-100 900 kill the bactria. Microbial load cfug or cfuml can be expressed as log10. What is often called a log reduction technically a reduction by one order of magnitude represents a 90 reduction in microbial population.
What is often called a log reduction technically a reduction by one order of magnitude represents a 90 reduction in microbial population.
Microbial load cfug or cfuml can be expressed as log10. F 0 D 250 log. Cfug SD 06 log 10 cfug and m 2 log 10 cfug. For example the CT999value in the EPA table is the CT required to achieve a 3 log reduction of Giardia lambliafor a given disinfectant type and concentrations under various temperature and pH conditions.