Cooperatives are needed to complete a round robin for D 6490, Standard Test Method of Water Vapor Transmission of Non-Film Forming Treatments Used on Cementitious Panels, approved in 1999. The round robin is being conducted by a task group of the Masonry Treatments Subcommittee of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications.

Task Group Chair Thomas Sliva can provide all materials and reagents. Testing involves applying treatments to cementitious panels. To participate, contact Thomas Sliva, Vice President and Technical Director, DL Labs, New York, N.Y. (phone: 212/777-4445). Committee D01 meets June 10-13 in Pittsburgh, Pa., in conjunction with ASTM Committee G03 on Weathering and Durability. For meeting or membership information, contact Staff Manager Tim Brooke, ASTM (phone: 610/832-9729). //

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