ASTM Committee F23 on Protective Clothing was formed in 1977. F23 meets twice a year, usually in January and June, with approximately 75 members attending two or three days of technical meetings. The Committee, with a membership of about 260, currently has jurisdiction of over 44 standards, published in the Annual Book of ASTM Standards, Volume 11.03. F23 has 6 technical subcommittees that maintain jurisdiction over these standards. Information on this subcommittee structure and F23's portfolio of approved standards and Work Items under construction are available from the Lists of Subcommittees, Standards and Work Items below. These standards have and continue to play a preeminent role in the protective clothing industry and address issues relating to, physical, chemical, biological, human factors, and flame and thermal and radiological.