What type of instrument is a burette?

A burette is a glass tube specifically designed for dispensing precise amounts of liquid, typically during titrations in chemistry experiments. It features a tap at the bottom, allowing for controlled release of the liquid, which is essential for achieving accurate measurements when carrying out reactions. The structure of a burette, often graduated with markings, enables scientists to determine the volume of liquid dispensed with high precision.

In contrast, a measuring cup is used for measuring larger volumes of liquids and is not as precise as a burette. A digital scale measures weight, which is not relevant to liquid dispensing. A thermometer is used for measuring temperature, unrelated to the actions performed with a burette. Thus, the definition and function of a burette align well with the type of instrument described in the correct choice.