A pipette is a laboratory instrument designed to measure and transfer liquids with high precision. It typically consists of a slender tube or nozzle, with an attached mechanism (such as a bulb, plunger, or electronic control) to create suction, drawing liquid into the pipette. Pipettes are used for various applications in scientific research, including sample preparation, reagent mixing, and biological sample handling. Depending on the model, pipettes can be manual (such as micropipettes) or electronic, with some designed for single-use and others for repeated use.