The key to creating a stable emulsion is obtaining the finest possible droplet size. The more shear energy introduced into the mix, the smaller the suspended droplets will become, creating a fine stable emulsion.
The high shear rotor/stator design of the Silverson mixer is ideally suited to this application and can easily achieve emulsions with a droplet size of 2 to 5 microns. Finer emulsions down to 0.5 microns can be obtained, depending on the formulation. In many cases, this can eliminate the need for high pressure homogenisers.
Silverson offers a range of in-tank and In-Line mixers widely used for preparation of emulsions, from laboratory scale up to bulk production units.