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Probably because many people have touched the materials so if you don't some of the bacteria could get into yourbody.

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9y ago

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Why must we wash our hands after experiments?

You must wash your hands after an experiment so you don't contaminate yourself with anything harmful.


Should you wash your hands before you do an experiment?

Yes, you should always be sterile before performing any experiment as to not add any variables.


Why is it important to wash your hands after you an experiment?

As per the safety rules you must wash your hands after experimenting because when handling chemicals or bio-hazardous materials it might left some bacteria in your hands and you can be sick after that or you can get a disease. So always wash your hands with soap even though you wear gloves while experimenting.


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Think about literally washing your hands and you can figure this out. If you wash something off your hands, you are getting rid of it. Washing your hands of something means you are done with it - you take no further responsibility or work no further on it.


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Is it nasty if you pick your booger with your finger and you wash your hands after when you are done picking your booger?

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What is wrong with this sentence Employees must wash your hands?

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