It adopts European B standard, with 3-times pre-vacuum preceding vacuum drying. Residual humidity is less than 0.2%. Vacuum measurement reaches ?.70bar. It sterilizes and sanitizes miscellaneous packed or unpacked medical instruments, whether solid or A-type hollow, whether with multi-apertures or inset pipes. It efficiently rid air from every hollow area of any hollow instrument, such as hand-piece, making sure that water steam reaches every corner. It is installed with BOWIC& DICK which measures the penetration of water steam. Mini printer can be attached to record the process of sterilization.