This book introduces the key toolbox for successful process analytics including basic engineering principles, key sensor technologies, and basic control solutions for pharmaceutical unit operations. The first part discusses principles relevant to the engineering requirements of process analytics, covering terminology, interfaces and sampling. The second part introduces a comprehensive list of the measurement techniques employed ranging from physicochemical properties, over spectroscopic techniques, to specialized techniques such as tomography and acoustic monitoring. The final part of the book showcases concrete examples of process analytics in a chemical, biochemical/pharmaceutical and regulatory context in traditional and newly developed processes.