Pigment-solvent interaction has been studied in terms of suspension behavior of four inorganic pigments in 33 individual solvents. The data on settling rate of pigments in the solvent are used for estimating the interaction between them. Four types of interactions were classified on the basis of suspension behavior of pigments in solvents. The data of partial solubility parameters of solvents in which the pigment had long time suspension, short time suspension or swelling are used in a computer program for the surface characterization of pigment. -- AATA