A holistic approach to plastic testing. The qualification of polymer materials and products requires plastic testing. Within the field of plastics engineering, plastic testing is therefore a distinct technical discipline. The most important methods of plastic testing, along with their application and execution, are described and explained. Essential knowledge about the key testing procedures is provided, and guidance on conducting the investigations and processing the measurement results is presented. The readers are intended to be empowered by the information to understand, quantify, and successfully solve quality-related issues in plastics engineering. By practitioners for practitioners. Practitioners from the development, manufacturing, and quality assurance of plastics engineering products and studies.