This European Standard is a CEN Technical Report (CEN/TR) on the application of EN ISO/IEC 17024 specifically for the implementation of EN 473. The guidance provided is in sequence with the criteria of EN ISO/IEC 17024:2003, and makes direct reference to EN 473 where no guidance is considered necessary because EN 473 provides the necessary detail. It is important to note that the guidance provided herein is specifically for certification bodies implementing EN 473, and not for employers implementing EN 4179:2009 which includes, in Clause 2, a normative reference to EN ISO/IEC 17024:2003.