ASTM Committee D27 on Electrical Insulating Liquids and Gases was formed in 1959. D27 meets twice each year, in November and May, with about 30 members participating in 12 meetings over two days. The Committee, with a membership of approximately 121 members, currently has jurisdiction of 52 approved standards that are published in the Annual Book of ASTM Standards, Volume 10.03. A list of each subcommittee, and the portfolio of approved standards and work Items under construction are available from the List of Subcommittees, Standards, and Work Items below.