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. 2010 Oct 21;5:867–873. doi: 10.2147/IJN.S13273

Figure 4.

Figure 4

Encapsulation of sulfamethazine in nanoemulsions formulated with low-energy spontaneous emulsification, with ethanol as a cosolvent. Hydrodynamic diameter and polydispersity index (PDI; inset) are plotted against the surfactant/oil weight ratio (SOR). Surfactant = C remophor ELP®, oil = Labrafil M 1944 CS®. Oil/cosolvent weight ratio = 1. The gray part indicates that the criteria of PDI quality are not met, and the suspension cannot be considered as a nanoemulsion.