This technical report details the investigation into the permeation of oxygen breathing apparatus by various gases and vapors. It presents findings on the rates and mechanisms of permeation, offering valuable insights for engineers, scientists, and manufacturers involved in the development and maintenance of respiratory protective equipment. The work by Arno Carl Fieldner serves as a foundational study for understanding material behavior in critical safety applications, emphasizing the importance of material selection and design considerations in ensuring the reliability and efficacy of breathing apparatus in hazardous environments.
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