This sterilizer has European Class B Standard which is 3 times preceding pre-vacuum drying function has residual humidity of <0.15 percent. Its vacuum measurement reaches -0.92 bar. It sterilizes and sanitizes miscellaneously packed or unpacked medical instruments, whether solid or A type hollow, with or without multi-apertures or inset pipes. It effectively and efficiently removes air from every hollow area of any hollow instrument to ensure that water steam reaches every corner. It is installed with BOWIC & DIICK which measures water steam penetration and can be installed with mini-printer to record sterilization process.