glass reactors are mainly used for synthetic reaction, distillation and concentration of different types of materials. We have single wall and double wall . The reactor can be pumped to a negative pressure state according to some experimental requirements. A constant pressure funnel or an adjusting valve on the feeding bottle allows you to add material to the vessel at a uniform and controlled speed. Condenser helps to recover some materials distillated during reaction. Circulating liquid can be filled into the jacket to heat or cool materials inside. Triple wall glass reactor with two jackets, the inner jacket is for circulating liquid, and the outer layer should be pumped to vacuum condition for thermal insulation