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ASTM D1331-14

Standard Test Methods for Surface and Interfacial Tension of Solutions of Paints, Solvents, Solutions of Surface-Active Agents, and Related Materials

This standard describes test methods to determine the surface tension and interfacial tension of surface-active agents with a tensiometer. 

  • Method A—Surface Tension by du Noüy ring
  • Method B—Interfacial Tension by du Noüy ring
  • Method C—Surface Tension by Wilhelmy plate
  • Method D—Interfacial Tension by Wilhelmy plate.
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