The Pfeiffer 2021 i version Analytical Pascal series Dual Stage Rotary Vane Vacuum Pump is specially designed for analytical instrument applications such as: Mass Spectometers, GC/MS, LC/MS, Electron Microscopes and Residual Gas Analyzers. Thanks to a very simple and highly reliable design, the Pfeiffer 2021 i Pascal dual stage rotary vane vacuum pump provides great performance with high pumping stability. Used for light gases, they produce low noise with minimal oil backstreaming, and have a long operating life. The Pfeiffer 2021I 2021 I Pascal vacuum pumps have a pumping speed displacement of 14.6 CFM. This Pfeiffer 2021i / 2021 i version dual stage rotary vane vacuum pump comes with manufacturer's warranty. Oil, parts and accessories for this pump are available on this website.