Abstract
This paper reports a historical description of the "Brazilian Method For The Determination Of Airborne Inorganic Fibres Concentration (including asbestos fibres) -Membrane Filter Method" since the creation of the Technical Group Organization for the study of the several existing methods in 1987, until the publication of the definitive method by "ABNT - Associação Brasileira de Normas Técnicas " (Brazilian Association for Technical Standards) in 1994.
The Brazilian Method is very similar to the methods from AIA-Asbestos International Association, to NIOSH-National Institute for Occupational Safety and Health, and ISO- International Standards Organization in collecting samples, preparation and analysis. The main differences are the counting criteria which do not consider the fibre aggregate particulate matter.
