Since the outbreak of SARS in 2003, theconstruction of bio-safety laboratory has made great progress and rapid developmentin China. Bio-safety laboratories were built in many fields, such as researchof biological virus, development of biological technology and geneticengineering. Bio-safety laboratory has its own characteristics compared withcommon laboratory. Among the laboratories with different bio-safety levels,BSL-3/4 is mainly used for the research and detection of highly contagious,severe infectious disease for human and livestock, so its safety is extremelyimportant. If the experimental materials or laboratory space are not properlyprotected, it may cause infection of laboratory personnel, or even virusleakage, leading to a large area of virus infection and serious publicpollution safety events.

The large-scale sterilization cabinet of Bio-safetyLevel 3 laboratory produced by MMM Group of Germany adopts many specialfeatures, such as shockproof bio-safety seal, steam inlet designed at thebottom of chamber, condensate collection and re-sterilization, on-linesterilizable air inlet and exhaust filter device, special shape sealing ring,etc. It can greatly reduce the possibility of infection and virus leakage.

Because the samples in BSL-3/4 are highlyinfectious to human and livestock, it is necessary to sterilize the core areaof laboratory and even the whole laboratory space after each experiment toensure that the laboratory is always on standby without pathogens. In the past,when formaldehyde was used for sterilization, the laboratory would haveirritating smell for a long term, white crystals that are difficult to removeand the risk of laboratory corrosion. Therefore, more and more Bio-safety Level3/4 laboratories (BSL-3/4) use the method of dry vaporized hydrogen peroxidefor sterilization. The vaporized hydrogen peroxide space sterilizer of PEA companyin Germany has the advantages of convenient movement, real-time monitoring ofsterilization environment (temperature, humidity, hydrogen peroxideconcentration), complete gasification at 150~160℃ and compliance with various laws andregulations. It is widely used in BSL-3/4 laboratories in China and foreigncountries.

In order to reduce the times of opening thesafety door and minimize the risk of contamination of the laboratory and theexternal space of the laboratory, more and more new laboratories use double doorhydrogen peroxide transfer hatch to transfer small items. PEA company ofGermany can provide double door hydrogen peroxide transfer hatches of variousvolumes. Hydrogen peroxide generator is integrated in the equipment to avoidwaste of laboratory space; The inner chamber is made of AISI 316L stainlesssteel, which can resist 30% ~ 35% hydrogen peroxide solution corrosion for along time; German Siemens controller is adopted to realize double doorinterlock and authority control management.

The large-scalesterilization cabinet of bio-safety level III laboratory produced by MMM Groupof Germany realizes the function of temporary double door hydrogen peroxidetransfer hatch by selecting and configuring the external mobile hydrogenperoxide generator with H2O2 interface.