Micropipette Quiz

What part of the micropipette is responsible for ejecting the tip?

• Plunger

• Tip ejector

• Volume adjustment dial

• Digital display

While preparing samples for an experiment, how do you adjust the volume on a micropipette to accurately measure 20µL of a lab sample?

• Turn the plunger

• Press the tip ejector

• Turn the volume adjustment dial

• Shake the micropipette

What is the first step in properly handling a micropipette?

• Press the plunger to the first stop

• Attach a tip

• Adjust the volume

• Check the calibration

How does pressing the plunger to the first stop differ from pressing it to the second stop?

• The first stop is for drawing up liquid, the second stop is for ejecting liquid

• The first stop is for ejecting the tip, the second stop is for drawing up liquid

• There is no difference

• The first stop adjusts the volume, the second stop draws up liquid

What is the correct way to attach a tip to a micropipette?

• Push the micropipette into the tip and twist

• Gently press the micropipette into the tip without twisting

• Use the tip ejector to pick up a tip

• Place the tip on a surface and press the micropipette down onto it

What is the effect of repeatedly using the same tip for different liquids?

• It saves time

• It can lead to cross-contamination

• It enhances the pipette's accuracy

• It has no effect

When should you use a micropipette?

• When estimating the amount of liquid needed
• When precise and accurate measurements of large volumes of liquids above 1 ml are required.

• When precise and accurate measurements of small volumes of liquids below 1 ml are required.

• When using a regular pipette