This CEN Workshop Agreement (CWA) provides a guideline for the verification of air emission abatement technologies and it specifies a reporting structure for a verified vendor claim for the performance of a specific air emission abatement technology. The technology can comprise hardware (devices, apparatus and tools), software (e.g. for process control and improvement) and physical, chemical and biotechnological processes with their adaptation to site-specific conditions.Following this CWA gives a report for a verified product. This report provides standardized key information about an air emission abatement technology when applied. The report aims to illus