DIN EN ISO 14021 specifies requirements for self-declared environmental claims, including statements, symbols and graphics, regarding products. It further specifies selected terms commonly used in environmental claims and gives qualifications for their use. This standard also specifies a general evaluation and verification methodology for self-declared environmental claims and specific evaluation and verification methods for the selected claims in this standard. Additional terms and definitions and specifications are included by the newly added amendment to DIN EN ISO 14021:2001-12. The newly specified terms and definitions originate from the thematic areas of biomass, greenhouse gases and sustainability. With respect to these areas, additional specifications to qualifications for labelling for each thematic area and for the application of the terms and definitions have been made. The committee responsible for the standard is NA 172-00-03 AA "Ökobilanzen und umweltbezogene Kennzeichnung" ("Life cycle assessment and environmental labelling") at DIN.