GB/T 12805-2011 regulates Burette in laboratory Glass instruments. This standard applies to all kinds of Glass materials Burette. The classification of Burette is specified in detail, covering acid, basic and other types. Appearance requirements are clarified, such as Glass should be free of bubbles, defects, etc. Accurately define size specifications, such as capacity nominal value, scale interval, etc., to ensure Burette Measurement accuracy. It also stipulates performance indicators such as strength and adhesion. In addition, inspection rules, signs, Encasement, etc. are given. According to this standard, the Burette mass can be guaranteed, providing a reliable measuring tool for laboratory titration analysis experiments, and assisting in the accurate acquisition of experimental data.