One of the main goals in waste water treatment in which foam exists is to keep control of that foam in the most efficient and effective way. Too much foam in the production process leads to uncontrolled safety situations, a reduction of production capacity, increased expenses and transport problems. But not only efficiency and effectiveness, also biodegradibility and national waste water regulations can be main issues in reducing and controlling foam. Besides the biogas, waste water treatment and food industry Van Meeuwen’s antifoam agents are used in coatings, detergents, paper, recycling, manure treatment and fermentation and distillation plants.