Answer:
The correct answer is a volumetric pipette.
Step-by-step explanation:
These elements are used to transfer an exactly known volume of standard or sample solutions.
In the upper part, they have an engraved ring called the line. If the pipette is filled to this line and discharged properly, the volume indicated by the pipette is poured.
They are manufactured in different sizes and may have one or two flush marks (double flush pipettes).
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