Reference procedures are measurement, test or analysis methods which BAM makes generally available for comparison and/or traceability purposes and which either have an entry in the KCDB (key comparison database, international database of national metrological institutes for reference methods and measurements) or fulfil the following requirements:

  1. documented validation stating the method characteristics such as limit of quantification, precision, measurement uncertainty, etc. and, whenever possible, metrological traceability to SI units or another standard recognised for this purpose,
  2. corresponds to the state of the art and knowledge,
  3. regular performance of proficiency tests or other adequate proof of suitability,
  4. regular review for up-to-dateness and the state of standardisation.

For its diverse testing activities, BAM operates a comprehensive management system which fulfils the requirements of DIN EN ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories). BAM reference procedures have either been accredited by the German Accreditation Body (DAkkS) or verified by an internal audit according to DIN EN ISO/IEC 17025.

Test procedures for which special legal regulations exist, e.g. in the area of hazardous substances or dangerous goods legislation, are not included. The reference methods are used in all subject areas of BAM.