Carbon black dispersion is an expression that is usually used to refer to the particle size and dispersion of the carbon black. The carbon black is a material used in particular in the manufacturing of elastics, manufacturing of plastics and several industrial operations as a filling material. The size and dispersion of the carbon black can have a significant effect on the physical properties and performance of products. Samples of carbon black are examined under a microscope to find out the size, shape and dispersion of the particles.