European class N Standard 1.New design of open water tank. 2.Adopting European N standard,with thermal air ventilating and drying function,it can be used for A type hollow instruments and solid instrument and solid instruments.Thermodynamic vacuum guarantees elimination of cold air the cavity and makes sure of perfect saturation of water dream. 3.Various sterilizing water quantity ions are respectively for different material,which embodies the individualized service. 4.Automatic malfunction detection system makes easy maintaining.