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オリジナル投稿者: mike ,

テキスト:

This might be a good time to mention that for electronics 99% isopropyl alcohol is safest and

for disinfectant 70% is most effective.

This web, though commercial, describes all the concentations and why best  quite well.

https://blog.gotopac.com/2017/05/15/why-is-70-isopropyl-alcohol-ipa-a-better-disinfectant-than-99-isopropanol-and-what-is-ipa-used-for/#When_Is_99_Isopropyl_Alcohol_Used

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