Burets are used to titrate liquids. A buret is filled with a specific volume of a liquid, and placed beneath it is a container such as an Erlenmeyer flask. By opening the valve on the buret, the liquid in the container will then be titrated. High-quality burets have a venting mechanism with which they can be very easily refilled with the exact volume for which the buret is calibrated.
Les buretes s' utilitzen per titular líquids. Una bureta s' omple d' un volum especificat d' un líquid i al dessota s' hi col· loca un recipient com ara un matràs Erlenmeyer. En obrir la vàlvula el líquid del recipient es titularà. Les buretes d' alta qualitat tenen un mecanisme que permet reomplir- les amb el volum exacte al que estan calibrades.