The conductivity of different ME was found to be in range 137.0 ± 2.3 s cm−1to 194.5 ± 2.8 s cm−1. This results shows the microemulsions were O/W type. The refractive index ofall ME was ranged between1.35 and 1.40 signifies that prepared ME were clear and transparent. Poly dispersity index is a measure of particle homogeneity and it varies from 0.145 ± 0.006 to 0.349 ± 0.014 (Table 2)