damacherepaha Uncategorized November 5, 2018 1 Minute tilthat: 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 to kill it even after two hours of contact time. via reddit.com Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Like Loading... Related Published by damacherepaha View all posts by damacherepaha Published November 5, 2018