The EVM-series are Diaphragm Vacuum Pumps.
The EVM-series pumps are quiet running oil free vacuum pumps with high efficiency and a long lifetime. They are often used in medicine products analysis, fine chemical industry, biochemical pharmacy, food examinations and criminal investigation technology. The pumps are specially designed for use inside laboratories. There is a line of anti-corrosive pumps that is Teflon treated on the inside and hold PTFE material for materials that come into contact with the pumped gasses.