Millivac Mini and Maxi vacuum pumps are compact maintenance-free pumps that provide a consistent source of vacuum for filtration and other laborabory applications. A patented diaphragm design has reduced the footprint of the pumps compared to conventional models..Use Millivac Mini Pump to filter water and aqueous SOLUTIONons .Use Millivac Maxi Pump to filter larger volumes or viscous SOLUTIONons .Millivac Maxi Pump is gas-tight has a PTFE-coated diaphragm and is compatible with slightly aggressive or corrosive gases and vapors .Neither pump requires lubrication and neither is explosion proof Features Benefits.Lubrication not required .Quiet compact design conserves previous lab bench space .Millivac Maxi pump is gas-tight has a PTFE-coated diaphragm and is compatible with slightly aggressive or corrosive gases and vapors ApplicationsMillivac Mini Pump for Water and Aqueous SOLUTIONons Millivac Maxi Pump for Larger Volumes or Viscous SOLUTIONons