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What is the correct answer to the following statement: You should always pipette by mouth?



A. Always - it is a fast and efficient method for transferring liquids in the lab.
B. Only when you can t find a pipette bulb or think it might be dirty.
C. Only when you are sure that the teacher, your lab partner, and Guttatta, Snapple, and Vincent and VanGogh aren t looking.
D. Never - and if you thought yes to any of the other choices you should be given only bread and water for a week.

This question is part of Middle school science lab safety quiz
Asked by Somateria, Last updated: May 28, 2020

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2 Answers

C. Bernthal

Its kind of my job to give answers

C. Bernthal, Teacher, MA, P.hD, Seattle

Answered Jan 31, 2019

You should never pipette by mouth. It can be too risky. Mouth pipetting is forbidden in the chemistry department. A pipette is a laboratory tool commonly used in chemistry, biology, and medicine to transport a measured volume of liquid, often as a media dispenser.

Pipettes come in several designs for various purposes with differing levels of common pipetting techniques have been identified as potentially hazardous due to biochemical stress factors. Proper pipetting posture is the essential element in good work practices. It is a part of preparing experiments.

 

somateria

Somateria

Answered Nov 07, 2017

Never - and if you thought yes to any of the other choices you should be given only bread and water for a week.
 

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