Crystallization from solution is a core technology in major sectors of the chemical process and allied industries. It is widely employed in the manufacture of pharmaceuticals during the intermediate and final stages of purification and separation. The process defines drug chemical purity and physical properties: crystal morphology, size, size distribution, habit or shape and degree of perfection. Variations in crystal characteristics are responsible for a wide range of pharmaceutical formulation problems, related for instance to bioavailability, a principal pharmacokinetic property, and the chemical and physical stability of drugs in their final dosage forms. We intend to bring about a sizable step change in pharmaceuticals manufacturing through a new technology that combines and exploits the benefits of continuous flow processing, microreaction technology and ultrasound engineering.