The Buchi V-700 Oil-Free Vacuum Pump with V-850 Controller is a chemical resistant dual head pump with intuitive timer controls. The controller has 43 pre-programmed solvents to easier simplify selection. A chemically resistant, dual-head PTFE diaphragm pump is a durable and reliable choice for a wide range of laboratory applications. this pump is a powerful oil-free solution eliminating the need to dispose of used pump oil. Oil free minimizes contamination risk.