All Dürr Dental compressors operate with innovative membrane-drying unit and therefore offer an unbeatable benefit: Permanent power availability. As the drying process is based on diffusion through membrane fibre layers, the normal regeneration step of conventional drying processes is eliminated. Permanent power availability, no regeneration times Constant dryness of the compressed air Pressure dew point of ? 5°C at 40°C ambient temperature Maintenance-free except for annual filter change