Reagents are set in the inner layer of double-layer glass reaction kettle, at the same time, vacuum can be taken out and mixing speed be adjusted. Interlayer can lead in refrigerating fluid, water and high temperature liquid to heat and cool the materials. It can be used in the experiment, middle-scale test, and production of chemistry, fine chemical engineering, biological pharmacy and synthesis of new materials. The products can be made into system devices with multi-purpose circulating water vacuum pump, diaphragm vacuum pump, low temperature circulating pump(vacuum), circulating cooler, constant temperature circulator, low temperature cooling liquid circulating pump and closed cooling and heating circulating equipment.http://www.toption-china.com/single-glass-reactor/