70% vs 91% Isopropyl Alcohol: Which Disinfects Better? | Apartment Therapy
TIL that 70% alcohol is better at disinfecting surfaces than 91% alcohol. In one experiment, a 50% alcohol solution killed Staphylococcus Aureus in less than 10 seconds, but a 90% solution failed
Reevaluating the Effectiveness of "Disinfectant" on Surfaces | ORAPI Asia