Participation is invited for a round robin study that will determine the sorption isotherms of building materials according to ASTM C 1498, Standard Test Method for Hygroscopic Sorption Isotherms of Building Materials, approved May 10.

The study is being conducted by a task group of ASTM Subcommittee C16.33 on Insulation Finishes and Moisture, part of Committee C16 on Thermal Insulation.

Necessary materials, instructions, and procedure for calculations are available from the ASTM task group chairman, Phalguni Mukhopadhyaya, Ph.D., research officer, National Research Council of Canada, Building Envelope and Structure Program, Ottawa, Ontario (phone: 613/993-9600).

Committee C16 meets Oct. 14-17 in Deerfield Beach, Fla., and April 14-17 in Pittsburgh, Pa. For meeting or membership details, contact Tim Brooke, manager, ASTM Technical Committee Operations (phone: 610/832-9729). //

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