burette

A burette is a laboratory instrument used to measure and dispense precise volumes of liquid, often in titrations or chemical analyses. It consists of a long, narrow tube with a scale marked along its length and a stopcock at the bottom that allows controlled flow of liquid. Scientists fill the burette with a solution and release it drop by drop into another container to determine how much is needed to cause a reaction. This precise measurement is crucial in experiments to ensure accurate results in chemistry and other scientific fields.