The vacuum stirred single-layer glass reactor products are mainly used for testing and production in industries such as pharmaceuticals, chemicals, and biological products. This product uses the principle of constant temperature heating and constant speed stirring to uniformly stir the raw materials under vacuum negative pressure conditions, allowing the materials to fully react, evaporate, separate, and recover solvents in the kettle. All parts in contact with the materials are made of high temperature resistant and corrosion-resistant borosilicate glass and polytetrafluoroethylene materials, which are particularly suitable for the reaction of easily decomposed and denatured biological products, and are not prone to chemical reactions with various materials.