Must always be used with volumetric or graduated pipettes?

Volumetric and graduated pipettes are commonly used in laboratories to measure and transfer precise liquid volumes, but they are not always required for every type of liquid handling. A pipette should be selected based on the task at hand. Graduated pipettes are more versatile and allow for varying liquid volumes, while volumetric pipettes provide precise, fixed-volume measurements. The choice depends on the accuracy needed for the experiment and the type of liquid being measured. However, for maximum accuracy, they should be used according to their intended purpose.