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 slender tube with a plunger that creates suction to draw liquid into a disposable tip. Micropipettes are essential in fields like molecular biology, biochemistry, and clinical diagnostics for precise liquid handling. These devices come in various types, including single-channel and multi-channel micropipettes. Single-channel micropipettes are used for individual samples, while multi-channel versions allow for simultaneous handling of multiple samples, increasing efficiency in experiments. Proper calibration and technique are crucial for accurate measurements.