title: A laboratory method for generation of replicate filter samples of asbestos fibers in air.
abstract: An exposure chamber for generation of 10 replicate filter samples of asbestos fibers is described. The coefficient of variation of replicate samples from laboratory generated amosite aerosol was less than 2.6% in samples with densities of 15 to 250 fibers/mm2. Thus, generation of replicate filter samples of asbestos fibers was possible on a small scale with good precision. Air ionization by an ion source did not alter the variability of replicate samples at relative humidities of 40% or higher. The exposure chamber is of moderate weight and can also be used in the field for collection of replicate samples from working environments.
authors.affiliation: National Institute of Occupational Health, Oslo, Norway.
authors.forename: A
authors.initials: A
authors.lastname: Skogstad
authors.forename: W
authors.initials: W
authors.lastname: Eduard
authors.forename: P O
authors.initials: PO
authors.lastname: Huser
mesh_terms: D000388:Air / Q000032:analysis*; D000395:Air Pollutants, Occupational / Q000032:analysis*; D000704:Analysis of Variance; D001194:Asbestos / Q000032:analysis*; D001273:Atmosphere Exposure Chambers; D005374:Filtration; D011786:Quality Control
chemical_list: D000395:Air Pollutants, Occupational; D001194:Asbestos