[Microbiological aspects of the performance of life support systems during prolonged operation]

The environmental control system using superoxides, sillicagels or synthetic ceolites is capable of purifying the atmosphere from microorganisms. The air conditioning system is another means for air purification from microorganisms. The possibility of microbial build-up and multiplication in the atmospheric condensate makes it necessary to assume that an air conditioning system may contribute to the transfer of conditionally pathogenic microorganisms in a space cabin. The reliability of a life support system may degrade due to an accumulation of microorganisms in its components. Further extensive studies are needed to clarify this problem.