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The surface tension dependency on surfactants concentration (A) C9-glu black circles; C9-gal red circles; C9-lac green circles (B) mPHN-glu black triangles; mPHN-gal red triangles; mPHN-lac green triangles. The intersection of the lines indicates the concentration at which the slope of the surface tension isotherms changes significantly, which is conventionally taken as CAC.
