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[万花筒] 【整理】2013-02-14&02-17 如何洗手最干净?洗手液-肥皂杀菌效果大对决

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In this season of flu and so many other germs were told again and again that hand sanitizers and soap by the best defense. Last year, American spend more than 170 million dollars on hands sanitizers alone. So we wandered what works best? And how do the sanitizers compared a show dump with soap? Well tonight our key medical editor doctor Richard Beser puts them to the test to gets some real answers.

Clean? As many as 400,000 germs per hand, that’s how many bacteria travel with us every day. So youth university Miriland from seeking lab, 6 brave grad students and I volunteerly donster hand in a toxic bru, thousands of equal life bacteria. Yeah, equal life.



Something that little odd about raving equal, too see what to take off, first up hand sanitizers. We kissed to two kinds of and find this all. One with 60% of alcohol, and one so-called natural formula containing no alcohol, the key with hand sanitizers is to use a naffibin. You hand should take up a bowl 15.2 too longer to dry. Now let that air dry ok? Then we press our hands to special incubation plates to grow any remaining bacteria. The results dramatic. Here those green sparks to the equal eye, the crew for unwashed hands, after using hands hand sanitizer with 60% alcohol, but the formula without alcohol, just look how many germ behind.

Alcohol based sanitizer works so much better, because alcohol breaks the bacteria’s proteins and kills them. But if you really want to get clean, what’s you best of all? Guess what? It’s your old friend, soap, soap not only gets it well on bacteria and sanitizer, it gets more viruses too. Surprisingly, study show regular and inter-bacteria soap, now equally affected. But how you use it it is crucial.

Most of us only think 5 seconds to sink, stop, just look out how many germs remain? Yark, go. You have to wash your hand for 420 seconds to really get the bugs off. And yes, they are singing happy birthday twice, so let for build again.


Hand sanitizers are can get to you sank. Look for one at least 60% alcohol, but wash with soap, any kind is better as long as you washed for long enough.

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