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You must wash your hands after an experiment so you don't contaminate yourself with anything harmful.
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.
It should be a cold temperature.
You should wash shower curtains by taking them down and using the tub to scrub in. You should use a diluted bleach, in order to prevent mold.
The Jewish custom to wash hands before meals.
Yes, you should always be sterile before performing any experiment as to not add any variables.
Yes, you should wash green apples before eating them, you should always wash fresh fruit before consuming.
You wash your hands before you eat and handle food don't you? You should wash your hands before and after you touch any living creature
You should always wash fruits and vegetables before eating them.
wash the pH probe with distilled water and then dry it clean with tissue paper before and after testing the pH.
Before so everything stays consistent and after so you're not all germy and stuff. :D
wash new blanket before using
it doesn't matter how many seconds you should wash your hand, but that you wash them thorougly
should you polish your car after washing it
.......... yes
wash your hands
yes