A micropipette is a laboratory tool used to measure and transfer small volumes of liquid, typically ranging from 0.1 to 1000 microliters. It consists of a plunger, a barrel, and a disposable tip, allowing for precise and accurate liquid handling in various scientific applications, including biology and chemistry. Micropipettes are essential in experiments that require careful measurement, such as PCR (Polymerase Chain Reaction) and cell culture. They come in different types, including single-channel and multi-channel models, enabling researchers to work efficiently with multiple samples at once.