Pigment Muller is the basic machine to test pigment for its properties like, strength and tone. In this equipment, pigment wetted with linseed oil of specific viscosity is ground between two roughened glass plates (One is stationary another is rotating). At measured equal pressure and revolution for both standard & specimen. After taking uniform draw down, results can be compared. By using this machine it's possible to determine to complete dispersability curve of any pigment individually.