MEDIA FOR AIR CLEANING AND AIR-ASSAY PURPOSES

摘要

Work was completed on the high-temperature, high-efficiency air filter. Technical assistance was given at a large-scale, privately financed run of an all-glass medium. Full-size filters have been produced in quantity and are offered by manufacturers;it is considered that commercial manufacture has been established.nA survey was made of air-sampling practices at 37 laboratories. Analysis of the survey results indicated that 22 different kinds of air-sampling filter media were in use among the laboratories questioned. We have recommended that air-assay practice be simplified by use of fewer media.