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.
As buretas empréganse para titrar líquidos. A bureta énchese cun determinado volume de líquido. En baixo encóntrase un contedor, como un matraz de Erlenmeyer. Ao abrir a válvula, o líquido do contedor será titrado. As buretas de alta calidade teñen un mecanismo de succión co que se poden encher de novo co volume exacto co que fosen calibradas.