Which type of pipette is shown in this picture?
How is the plunger on a P20 labeled?
Why is this step in micropipette use important?
It keeps the air displacement mechanism dry.
It prevents one solution from contaminating another.
It controls the accuracy of the volume of solution transferred.
More than one of these answers is correct.
If a student is using a P20 that is set as shown in the image, what volume of solution will be transferred?
The two pictures to the left show the two possible positions of the plunger on a micropipette.
Position One is the correct position when drawing liquid up into the pipette.