A 70% ethanol or isopropanol (or isopropyl alcohol)solution is made by adding three parts water to seven parts 95% ethanol or isopropanol. Methanol should not be substituted for ethanol or isopropanol ...
at least 60% ethanol or 70% isopropanol, according to the Centers for Disease Control and Prevention (CDC). They must also be safe to use on the skin.
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