The offered used diaphragm vacuum pump, Vacuubrand MZ4, is an excellent solution for continuous, oil-free evacuation and pumping of gases. All parts in contact with pumped media are made of aluminum and selected plastics, and allow a wide range of applications for non-corrosive gases. Vacuubrand is one of the leading vacuum pump manufacturers. The instrument was tested in our laboratory and is in a good working condition. See the attached manual for more detailed information about this pump.