The evaporation bottle rotates at a constant speed and the water bath is heated at a constant temperature. Under this condition: the material forms a large-area uniform thin film on the inner wall of the evaporation bottle for quick evaporation. The evaporation efficiency can be improved under vacuum conditions (a vacuum device needs to be connected). When the solvent vapor passes through the glass condenser coil, the vapor is cooled to a liquid ( a cooling device need to be connected) and recycled in a collection flask.
This series of products needs to be equipped with vacuum devices (circulating water type, rotary vane type, diaphragm type and other vacuum pumps), or cooling and circulating devices to form a system devices.