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(a) Minimum weight % of Brij 30 needed to obtain Winsor II microemulsion for H2O + NaCl/Brij 30/PRAC systems as a function of NaCl concentration in water. R is the volumetric ratio H2O + NaCl/PRAC. t = 25 °C. (b) Minimum weight % of Brij 30 needed to obtain Winsor IV microemulsion for H2O + NaCl/Brij 30/PRAC systems as a function of NaCl concentration in water. R is the volumetric ratio H2O + NaCl/PRAC. t = 25 °C.
