Determining the degree of pigment dispersion is of fundamental importance, because it affects the optical properties of a pigmented system. There are various methods for the determination of the dispersion degree of organic pigments, including sedimentation, electron microscopy, and colorimetry techniques, but their high demands on sample preparation or expensive instrumentation more or less limit their application. It is well known that organic pigments are relatively difficult to disperse, especially in aqueous systems. Thus, any technique that would help to describe the state of dispersion in such systems could be of great value, particularly if it could also be used as a quality control tool.