TIL that although you can buy different grades of isopropyl (rubbing) alcohol, 70% is actually most effective for disinfecting; the added water helps it to dissolve more slowly, penetrate cells, and kill bacteria. webmd.com Submitted by abxuwnnm111 t3_10bq37a on January 14, 2023 at 2:45 PM in todayilearned No comments 4