The main advantage of the pulsed back-and-forward cross-flow membrane emulsification is that it eliminates the shear stress outside of the membrane related to the recirculation of emulsion droplets along the pump and fitting circuit as it happens in conventional cross-flow membrane emulsification. Results obtained indicated that it was possible obtaining uniform emulsion droplets also when high concentration of dispersed phase was reached with high productivity comparing with the traditional cross-flow membrane operation. The method is suitable for the production of monodispersed particles containing bioactive molecule (that are shear sensitive) or viscous dispersed materials or large droplets.