It adopts European B standard with 3-times pre-vacuum preceding vacuum drying. Residual humidity is less than 0.2%. Advantages: - Vacuum measurement reaches-0.8bar.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 tides air from every hollow area of any hollow instrument, such as hand-pieces, making sure the water steam reaches every corner. - Mini printer can be attached to record the process of sterilization.