Borosilicate Glass Distillation Connecting Adapter Bent 105° is made of high borosilicate glass, which is resistant to high and low temperatures, as well as acid and alkali corrosion.Uniform thickness, sturdy and durable, good thermal conductivity, and not easily broken by ultrasonic cleaning. Mainly used in laboratories, school facilities, chemical and medical industries. The product specifications are complete, meeting the different needs of customers and available for selection.To clean the rotary evaporator, add cleaning solution ethanol or propanol into the elbow, connect one end to the rotary evaporator shaft, and block the other end with fingers. When the vacuum degree reaches a certain level, release the fingers, and the cleaning solution will be flushed into the rotary evaporator with negative pressure, achieving the cleaning effect. Other angles can be customized.