Quiz Topic 3 Pipette

Pipette classification of design can be found as ...

• To Obtain

• To Draw

• To Deliver

• To Dispose

Sarah want to transfer saliva sample from cancer patient using micropipette, which is NOT the correct description about the type of micropipette that she will be use? 

• to dispense exact amount

• piston-operate device

• piston have direct contact with blood

• A certain volume of air remains between the piston and the liquid

Ella using serological pipette to transfer 2.5ml HCl, she did blow-out the remaining amount at end of the pipette. Which is the statement NOT support her action?

• Serological pipette have scale until the tips

• The drainage characteristic of serological pipette need to be blow-out

• Serological pipette has continuous etched rings on top of pipette

• Serological pipette is design to hold particular amount but not dispense the exact volume

There are three types of micropipette. Please state ONE type of micropipette?

What is the correct step for forward pipetting?

1 - Release the plunger slowly 

2 - Press plunger until the first stop

3 - Release the plunger slowly

4 - Press the until the second stop

5 - Put the pipette into liquid

6 - Press plunger until the first stop

7 - Put the pipette tip at inside wall of container

• 2 > 5 > 1 > 6 > 7 > 4 > 3

• 2 > 5 > 1 > 7 > 6 > 3 > 4

• 2 > 5 > 1 > 7 > 6 > 4 > 3

• 2 > 1 > 5 > 7 > 6 > 4 > 3

During pipetting the liquid, Suzy has invert the micropipette with a filled tip and this is not the proper way in handling the micropipette because the liquid can run back to the piston and damage the micropipette. What other precautions should we tell her?

• Do not lay the micropipette down with a filled tip

• Do not reuse the tip that has been use

• Do not draw the liquid slowly

• Do not rotate the volume adjuster beyond the upper or lower range of the pipette