A homogenizer is a machine that homogenizes, or breaks down, particles in a liquid so that they are evenly distributed and remain in suspension. There are several different types of homogenizers, which function on different principles. Rotor-stator homogenizers also called high shear homogenizers have a very high rpm internal rotor that shears particles between the stator. Ultrasonic homogenizers use sound waves to break down particles. Homogenizers are used in a variety of industries, including food, pharmaceutical, and cosmetics industries. They are also commonly used in laboratories.