Pipettes, especially in the micro- or even nanoliter scale are very delicate mechanical tools (and expensive). They should never ever be operated without a tip and snapping back the button is a no-go.
is it you shouldn't touch chemicals with your hands
You should never touch or taste an unknown base because it may be corrosive and can burn or corrode your skin. Another reason is that it may be toxic or poisonous and you may die or need medical attention instantly.
You should never use direct sunlight as a light source, never hold with one hand, and do not drop it.
You should never pop your chest or any other part of your body. If your chest felt like it popped you may need to see a doctor.
ghosts
You should not press any button when you receive a robocall.
Yes, you always leave the bottom button open. This is a rule which you should never violate if you consider yourself a stylish and decently dressed man.
NEVER get your belly button pierced!
no. it should never happen
it usualy blows something up
never because it is sin and is bad
You should never feed any type of dog chocolate.
Do's: Use correct size pipette tips, dispense liquids slowly to avoid splashing, hold pipette vertically when aspirating and dispensing, calibrate pipettes regularly. Don'ts: Avoid dragging pipette tips across surfaces, never reuse disposable tips, do not over-pipette by pressing plunger too hard, do not blow out the remaining liquid in the tip.
No, Never should he be allowed to. San Andreas has too much violence, bad language, and sexual scenes. Never should a 11 year old be allowed to play it.
the top 2, never the last button
They need not be full to work but they should never be allowed to run to the point of being empty.
The Bible never should be banned from public schools! Everyone is allowed to read it and study it!