4 Purpose and scope 4.1 Product description 4.2 Functional units and claim units 4.3 System boundaries 4.4 Data quality requirements 4.5 Data selection principles 5 Life cycle inventory analysis 5.1 General principles 5.2 Data collection 5.3 Inventory analysis 6 Life cycle impact assessment 7 Parameters of environmental product declarations 8 Verification 8.1 Description of company/organization8.2 Description of third-party verification agency