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The literature on soaps and other detergents is replete with many methods for evaluation of these materials. Because the methods used frequently tend to measure either individual properties or to measure the results obtained through the combined properties of a material, it has been difficult to agree upon the methods for evaluation. ASTM Committee D-12 on Soaps and Other Detergents attempts to present to its members new techniques for evaluation and also to bring various proponents of specific methods together for a discussion of the problem. The March, 1951 meeting was notable for the variety and number of papers and discussions presented. Wherever possible, papers of a like nature were held under the auspices of the interested subcommittees. Others of general interest were presented at the general meeting which follows the annual business meeting. The following papers were presented at subcommittee meetings or were heard at the general meeting and are included in this compilation: Measurement of the Adsorption of Anion-Active Detergents by Materials Commonly Washed—W. A. Fessier. A Metal Cleaning Test Using Radioactive Stearic Acid as Soil—J. W. Hensley, H. A. Skinner, and H. R. Suter. Laboratory Performance Test for Detergents in Continuous Wool Scouring—F. A. Leonard. Practical Evaluation of Soiled Test Pieces— R. B. Mitchell. An In-Vivo Method for Determining the Degerming Efficiency of Soaps Containing Hexachlorophene—A. R. Cade. The Mechanism of the Wetting of Textiles— I. J. Gruntfest.
Harris, J. C.
ChairmanAssistant Director, Monsanto Chemical Co., Dayton, Ohio