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Environmental Assessment

Interim Policy for Particle Size and Limit Concentration Issues in Inhalation Toxicity Studies

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EPA is making available to all interested parties, an Interim Policy for Particle Size and Limit Concentration Issues in Inhalation Toxicity Studies which deals with several of the most controversial issues encountered in inhalation toxicity studies. It offers recommendations regarding aerosol particle size, limit concentrations in acute studies, revised Toxicity Categories, inhalation chamber selection, and reporting of analytical concentrations for formulations.

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John Whalan
  • by phone at:   703-347-8639
  • by email at:  whalan.john@epa.gov

Citation

U.S. EPA. Interim Policy for Particle Size and Limit Concentration Issues in Inhalation Toxicity Studies. U.S. Environmental Protection Agency, Washington, D.C.

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