Answer to Question #268498 in Microbiology for payal

Question #268498

70-75% ethanol is the most common disinfectant/sterilizing-sanitizing agent used in a microbiology laboratory. Explain why 70-75% ethanol is more effective than 95-99% ethanol. 


1
Expert's answer
2021-11-22T03:43:01-0500

70-75 % isopropyl alcohol is by far better at killing bacteria and viruses than 95-99 % isopropyl alcohol. As a disinfectant, the higher the concentration of alcohol, the less effective it is at killing pathogens. ... Coagulation of surface proteins proceeds at a slower pace, thereby allowing the alcohol to enter the cell


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