This course deals with the area at the interface between organic chemistry and chemical engineering. It provides an awareness of the physicochemical principles that underpin process development in the fine chemical and pharmaceuticals area. Throughout the course, real examples and numerous short worked examples are included to reinforce understanding. There is extensive use of video examples to illustrate the principles involved in fluid-fluid mixing and dispersion, fluid-solid dispersion and phase separation in fluid-fluid systems. Statistical design techniques are a frequently used tool in process development. Proper use of the techniques requires an understanding of the physicochemical concepts underlying process development. This course is therefore seen as complementary to a statistical design approach.