If you manage to get your hands on some highly concentrated isopropyl alcohol, 91% or more, and plan to use it as hand sanitizer make sure to water it down to ~70% concentration for maximum effectiveness. It seems counterintuitive but it is actually more effective at that concentration than the higher concentrations.
E.g. if you have a pint or 16 ounces of 91-99% isopropyl alcohol you’ll want to add ~5 ounces of purified water to the isopropyl alcohol before using it as hand sanitizer.
https://www.cdc.gov/coronavirus/2019-ncov/infection-control/hcp-hand-sanitizer.html
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