Air samples taken with a pump that is directly attached to the worker with the collecting filter and cassette placed in the worker's breathing zone (required under OSHA asbestos standards and EPA worker protection rule)
Glossary of Exposure Assessment-Related Terms: A Compilation. Prepared by the Exposure Terminology Subcommittee of the IPCS Exposure Assessment Planning Workgroup for the International Programme on Chemical Safety IPCS: Harmonization of Approaches to the Assessment of Risk from Exposure to Chemicals, This compilation has been developed for the IPCS Exposure Terminology Subcommittee. It does not necessarily represent the views or stated policy of UNEP, ILO or WHO. 2001. http://www.who.int/ipcs/publications/methods/harmo nization/en/compilation_nov2001.pdf (Expos - Amer) {1008}