(54) Title: CIRCULATION OF COMPONENTS DURING MICROFLUIDIZATION AND/OR HOMOGENIZATfON EMULSIONS (57) Abstract: An improved method for the manufacture of an oil-in-water emulsion involves circulation of emulsion components between a first container and a second container via a homogenizer and/or via a microfluidization device. Usefully, all of the emulsion components from the first container are emptied before being returned.