Table 4.

Characterization studies of microemulsion formulations.

Formulation code	Globule size (nm)	PDI	Zeta potential (mV)	Drug content (%)
ME1	1081.3 ± 0.4	0.69 ± 0.5	− 3.15 ± 0.6	99.49
ME2	862.1 ± 4.2	0.20 ± 0.03	− 0.22 ± 0.05	99.62
ME3	137.0 ± 3.8	0.32 ± 0.14	− 0.42 ± 0.21	99.68
ME4	513.5 ± 7.3	0.92 ± 0.11	0.31 ± 0.43	99.77
ME5	90.0 ± 6.6	0.23 ± 0.02	0.021 ± 0.15	99.53
ME6	122.6 ± 2.7	0.21 ± 0.03	− 0.36 ± 0.10	99.59
ME7	81.30 ± 0.49	0.21 ± 0.32	0.15 ± 0.07	99.67
ME8	79.09 ± 0.03	0.20 ± 0.05	0.16 ± 0.05	99.81
ME9	648.7 ± 1.02	0.57 ± 0.02	− 4.03 ± 0.02	99.46
ME10	512.8 ± 7.3	0.53 ± 0.51	− 1.67 ± 0.03	99.75
ME11	244.3 ± 0.5	0.65 ± 0.61	− 3.78 ± 0.12	99.62
ME12	83.2 ± 1.4	0.26 ± 0.14	− 2.11 ± 0.23	99.51
ME13	266.0 ± 2.5	0.65 ± 0.06	− 1.82 ± 0.04	99.42
ME14	319.3 ± 4.7	0.53 ± 0.05	− 2.57 ± 0.41	99.56
ME15	75.6 ± 0.2	0.20 ± 0.03	0.13 ± 0.11	99.71
ME16	58.8 ± 0.02	0.19 ± 0.14	0.05 ± 0.03	99.83