Pseudoternary phase diagrams of microemulsions composed of oil phase (Capmul 908 P), surfactant (Acconon), cosurfactant (propylene glycol), and water, where (a), (b), (c), and (d) were the different ratios of 1 : 1, 2 : 1, 3 : 1, and 4 : 1, respectively.
