During the last twenty years the Dyna-Mill, the world's Best horizontal Agitator bead mill designed for continuous operations has had such a pronounced effect on the technique of ultra fine wet milling of dye stuff and pigments insoluble in water or solvents that the Dyna-Mill is used world wide with great success for the ultra fine milling of such products. The purpose of such ultra fine milling is almost to ensure uniform distribution of solid particles & high colour intensity when the dye stuff & pigments are used at a later stage.If such products enter the market in the form of suspension or concentrates of suspensions, the ultra fine milling also improves the shelf life of such products.