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Alcohol evaporates, how long is hand sanitizer effective
September 29, 2009
by Anonymous,
8 weeks 4 days ago
Comment: 45101
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Alcohol evaporates at room temperature. Hand sanitizer is effective because the alcohol kills the germs, but the alcohol evaporates over time, with exposure to air. Have there been tests to determine evaporation rates? What about those huge bottles, is there any alcohol left to kill the germs after half the bottle has been used (so the empty portion of the bottle is filled with oxygen and evaporated alcohol)?