BrandTech 698143 Vacuubrand RZ9 Dual-Stage Rotary Vane Vacuum Pump, US Plug, 120V Dual-stage rotary vane (oil) vacuum pump used with freeze dryers or benchtop centrifugal concentrators, for low-temperature evaporations of high boiling point solvents, molecular distillations, and schlenk lines 5 x 10-3 millibar (mbar) ultimate vacuum Flowrate of 1.6, 4.0, or 6.0 cubic feet per minute (cfm), depending upon model Nitrogen plasma-treated parts for corrosion resistance Compact body saves bench or floor space