This standard specifies the terminology, product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements for pulsating vacuum pressure steam sterilizers. This standard applies to pulsating vacuum pressure steam sterilizers with vacuum systems. This product is used for sterilizing dressing fabrics, surgical instruments, medical liquids, etc. in medical units. It can also be used for sterilizing pharmaceutical factories, biological products, and biomedical research institutions.