Evaporation Retardants: Application by Means of a Water-Soluble Matrix

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Science  02 Apr 1965:
Vol. 148, Issue 3666, pp. 70-71
DOI: 10.1126/science.148.3666.70


Evaporation retardants interspersed in a solid or semisolid matrix of water-soluble material allow discrete particles of retardant to be released at a controlled rate as the matrix dissolves. This system permits the continuous application of evaporation retardants to a water surface without the use of mechanical devices.