Abstract
The methods for determining the efficiency of domestic fine air-purification filters using dioctyl phthalate and turbine oil test aerosols were compared under actual working conditions. The filters used were of different types and sizes and employed different filter materials. Such filters are used in the State Research Center of Virology and Biotechnology Vector and other similar institutions of Russia for facility air purification and respiratory protective equipment for researchers and technicians involved in manufacturing diagnostic, medicinal, and prophylactic preparations and performing research of group I-IV human-pathogenic viruses. No significant differences between the permeability coefficients of these filters tested by dioctyl phthalate and turbine oil aerosols were recorded. The data demonstrate that both dioctyl phthalate and turbine oil aerosols are equally appropriate for testing air-purification filter efficiency.