This European Standard specifies the vocabulary, methods for characterization, and templates for reporting about bio-based polymers, plastics, and plastic products (including semi-finished plastic products and composites). In particular this European Standard covers: terminology, bio-based content, bio-based carbon content, Life Cycle Assessment, sustainability aspects, and declaration tools. Biocompatible polymers and plastics for medical applications covered by specific provisions are out of the scope of this European Standard.