this post was submitted on 16 Aug 2024
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Science Memes

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submitted 2 months ago by [email protected] to c/[email protected]
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[–] [email protected] 13 points 2 months ago

ELI5 answer is 90% alcohol dries out the bacteria too fast and it converts into a bacterial spore with a hard shell that protects its insides.

70% alcohol gives it time to penetrate the cell wall and "dissolve" the insides of the bacteria, either killing it or rendering it non infective.