Abstract: A device in which exhaust fluid from a facility or equipment for treating biologically active material is heated to a temperature of at least 400° C. to kill or denature hazardous agents, and conveyed through a metal filter with no more than 0.1 ?m pore size, which is heated, preferably by the fluid, to essentially the same temperature. The relevant temperature is maintained during operation in both the fluid and the filter. Since the filter is dimensioned to trap microbial agents like bacteria and viruses and the temperature of the filter surfaces is sufficient for sterilization, microbial agents are bound to come into contact with said surfaces and a very high degree of sterilization certainty is reached. The filter is welded to the device body to provide a seamless structure. Heating and filtration are both alone sufficient for removing biohazardous agents, so the device provides double security.

Abstract: A method for cooling a jacketed autoclave or steam sterilizer by allowing a film of water to flow down as inner wall of the sterilizer's jacket. Condensate from the jacket space is drawn into a water ring pump. The water ring pump draws condensate from the lowest point of the jacket to a water side of the pump, and gas from the jacket to a normal suction inlet of the pump. During the process of cooling the sterilizer, a stream of water and air from the water ring pump is conducted to an upper part of the jacket of the steam sterilizer and is allowed to flow as a film down the inner wall of the jacket. Evaporation of the water is enhanced by lowering the pressure in the jacket.

Abstract: A device in which exhaust fluid from a facility or equipment for treating biologically active material is heated to a temperature of at least 400 ° C. to kill or denature hazardous agents, and conveyed through a metal filter with no more than 0.1 ?m pore size, which is heated, preferably by the fluid, to essentially the same temperature. The relevant temperature is maintained during operation in both the fluid and the filter. Since the filter is dimensioned to trap microbial agents like bacteria and viruses and the temperature of the filter surfaces is sufficient for sterilization, microbial agents are bound to come into contact with said surfaces and a very high degree of sterilization certainty is reached. The filter is welded to the device body to provide a seamless structure. Heating and filtration are both alone sufficient for removing biohazardous agents, so the device provides double security.

Abstract: Cooling of a jacketed autoclave or steam sterilizer is carried out by allowing a film of water to flow down the inner wall of the sterilizer's jacket space. Condensate from the jacket space is drawn into the water ring pump provided for vacuum in the autoclave jacket. The condensate is conducted to the water side of the pump while the normal suction line is connected at the pump to the gas zone. Thus, the water ring pump draws condensate from the lowest point of the jacket to the water side, and gas from the jacket space to the normal suction inlet. During the process of sterilizer cooling, a stream of water and air from the water ring pump is conducted to the upper part of the jacket space of the steam sterilizer and is allowed to flow as a film down the inner wall of the jacket space. Evaporation takes place with cooling of the jacket inner wall. This evaporation is enhanced by the lowering of pressure in the jacket due to the action of the water ring pump.