Designed especially for chemistry applications, these rotary vane vacuum pumps have parts plasma-treated for maximum corrosion resistance along with anti-suckback valves to reduce corrosive vapors from entering the pumps. Used on freeze dryers, vacuum ovens, concentrators, or for degassing, the pumps are engineered for high flow rates at working vacuum for reduced process times and higher flow throughput. These compact pumps have small footprints and energy-efficient motors that work at whisper-quiet volumes.