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20 questions
micropipette
transfer pipette
pipette pump
serological pipette
If the micropipette in this image is a P20 (which measures volumes from 2-20 microliters), how many microliters could it measure?
0.98
9.8
98
980
During a lab, you need to transfer 4.5 mL of a solution from a 150 mL flask to a 15 mL conical tube. Which of the following would be the best to use?
25 mL beaker
5 mL serological pipette
50 mL graduated cylinder
P10 micropipette
Graduated Cylinder
transfer pipette
micropipette
serological pipette
Pasteur pipette
Serological pipette
Tip
Transfer pipette
Use this with ___
Pasteur pipette
Serological pipette
Tip
Transfer pipette
pipette aid
You should NEVER rotate the volume adjuster on a micropipette beyond the upper and lower limit
true
false
Never invert or lay the micropipette down with a filled tip; fluid can enter the pipette and ruin the internal mechanism.
true
false
Letting the plunger snap back after withdrawing or expelling fluid won't damage the piston.
true
false
You must immerse the barrel of the micropipette in fluid, when taking in liquid
true
false
Always change out the micropipette tip when changing reagents.
true
false
Micropipettes are very accurate tools of measurement, but they are only as accurate as the person using it.
true
false
When expelling a liquid, it should be done up against the wall of the microcentrifuge tube to allow the capillary action to draw out the liquid entirely.
true
false
Select the sizes of ALL micropipettes we own in this lab. (Hint: Which ones did I focus on in the class lesson?)
.1-10 ml
.5-10 ul
2-20 ul
20-200 ul
100-1000 ml
This is the display from a P20 micropipette (which measures volumes from 2-20 microliters). How many microliters would be measured with this micropipette at this setting?
0.25
25
2.5
250
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