Vacuum Pumps

Sprengel Pumps for High-Vacuum Applications

See, e.g., en.wikipedia.org/wiki/Sprengel_pump and youtube.com/watch?v=viJ3T-1KZqY for a ~10 to 1mbar system.

Using Aspirators for Medium-Vacuum Applications

See, e.g., Lab Equipment: Aspirator Vacuum Pump for a ~100mbar system.


Resources and References

See Also

Using Diaphragm Pumps in Low-vacuum Applications
Using Fridge Compressors in Low-vacuum Applications