“Seventy percent alcohol has some water in it that allows it to cross a cell membrane, to really get into the bacteria to kill them,” Scott says.
70% vs. 91% Isopropyl Alcohol: Which Disinfects Better?
https://getpocket.com/explore/item/why-70-percent-alcohol-disinfects-better-than-91-percent-according-to-a-microbiologist





