Book excerpt: The ability to control particle size distributions and to characterize them once formed is an increasingly important topic in the processing industry. Many standard processing techniques are looked at in this book, but from new and innovative perspectives. Well established techniques such as crystallization and precipitation are covered alongside newer technologies such as sol-gel processing. Formation of products using emulsions, aerosols and polymers covered in this book are used across a wide variety of processing industries and all those involved in the processing of chemicals, food, minerals bioproducts and many other products will find this book an informative reference source.