ummm prefered by hospitals. got my alcohol wipes right here. and it reads "Alcohol prep.
Isopropyl Alcohol, 70% v/v sterile. 2 ply medium 1 prep pad."
70% ethanol actually sterilizes by precipitating the intracellular bacterial proteins, wich kills them. 100% ethanol is too strong and doesn't "have the time to enter" into the bacteria, so it only precipitate extracellular protein, and it doesn't kill it.
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