Dorr-Oliver began as two individual companies at the turn of this century. Through the years, the Dorr and Oliver companies became known throughout the world as dependable suppliers of quality products for treating solids suspended in liquids. Dorr-Oliver’s strength today still is in providing answers to problems involving fluid/particle dynamics throughout the process industries and for water pollution control. No matter in what industry or part of the world, you will find Dorr-Oliver equipment at work.