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it is because sweat and other substances especially colored ones may be present there. so it is best not to touch chromatogram papers to aviod contaminating it and getting erroneous results..:) chem.student..:)
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What precautions should a person take when working with pool chemicals?
You need to protect both your eyes and your hands from chemicals. Wear goggles, and gloves to protect your hands, and make sure not to touch skin.
How would you measure the pH of an unknown colourless solution?
Sticking a piece of litmus paper into it would be the first step in my estimation. See if it's base or acidic. If it is strongly one or the other, don't touch it with bare hands.
What happens when you touch calcium with your bare hands?
You get a burning sensation for the rest of the day
What are the common rules on table service?
Common rules on table service might vary according to state laws in the United States. Basically, a person who serves food should have good hygiene, not touch food with their bare hands, and not touch their hair or other parts of the body during the service of food.
Why must the paper touch the flame to burn a piece of paper?
The products contain more energy than the reactants.
How many hands will a paper dollar bill touch in circulation?
200
Why is it important in the amino acid chromatogram not to touch the paper with your fingers or hand?
The oils in your skin will contaminate them and affect the polarities of the substances affected by capillary action. The purpose of chromatography is to determine the components of a substance based on polarity. If the medium used to analyze the components is compromised then you will not arrive at a true answer.
Can you touch Elf on the Shelf with paper?
Yes, you can touch Elf on the Shelf with paper. The rules typically state that the magic of the Elf on the Shelf only disappears if the elf is touched by human hands. Using paper to touch the elf would not break this rule.
Why should you not touch switches with wet hands?
shock
Which two pieces from the microscope should you never touch?
is it you shouldn't touch chemicals with your hands
If you touch opossum poop what should you do?
wash your hands hahah
What should you never touch with wet hands?
Your right elbow.
What are two things US flag should never touch?
It shouldn't touch anything but gloved hands
Should you wash hands before touching hamster?
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
What three things should the US flag never touch?
The U.S. flag should never touch the ground, water, and nothing besides gloved hands
What should you do for the puppies once their born?
put a blanket in there cage and DO NOT TOUCH THEM touching a neborn puppy can make is sore and it could die - im sure you can touch them as long as your hands are clean , meaning that before you touch them to wash your hands .
Why does Miley Cyrus touch fans hands in concerts?
i want to touch peoples hands
