Vacuum pumps have a wide range of applications in the laboratory. Depending on the task, diaphragm, rotary vane, piston, scroll and screw pumps are used to generate rough and fine vacuum. Diaphragm pumps can be used for rough vacuum tasks thanks to their oil-free nature. Chemically resistant diaphragm pumps can be used in combination with vacuum gauges and separators as pumping units - especially for rotary evaporators, vacuum drying ovens and concentrators as well as gel dryers.
Rotary vane pumps are used wherever a fine vacuum of 10-3mbar must be achieved. Classic applications here are freeze-drying. Since rotary vane pumps require oil, oil-free screw pumps have recently also taken over this task.