burette, laboratory apparatus used in quantitative chemical analysis to measure the volume of a liquid or a gas. It consists of a graduated glass tube with a stopcock (turning plug, or spigot) at one end. On a liquid burette, the stopcock is at the bottom, and the precise volume of the liquid dispensed can be determined by reading the Titration is a technique or method where a solution of a known concentration is used to determine the unknown concentration of a second solution. Typically, the titrant (the known solution) is added from a burette to a known quantity of the analyte (the second solution) until the reaction is complete. A burette is a laboratory graduated glass tube used to deliver measured volumes of liquid to another vessel. It is commonly used for titration in quantitative analysis. In analytical . 532 80 119 475 540 301 244 3

why is a burette used in titration