The Physikalisch-Technische Bundesanstalt (PTB) is the National Metrology Institute of Germany. We strive for the measure of all things and develop measurement standards that are leading worldwide.
As a part of legal metrology and quality infrastructure, we set reliable and binding standards. We ensure that people and organizations can trust measurements. In doing so, we fundamentally contribute to our economy, science, society and the environment.
With internationally recognized cutting edge research, we are constantly redefining what is measurable, and with our diverse competences, we are enabling technological advancement to meet future challenges together.
Today, tomorrow and in the future. In all areas of life.
Together with our cooperation partners, we are opening up new potentials for quality, innovation and sustainability. For Germany, Europe and the world.

Division 9 deals with the general tasks in legal and industrial metrology. This comprises especially the cooperation with the German verification authorities and the accredited calibration laboratories. Furthermore the division coordinates the international cooperation in the area of quality infrastructure for the German government.
https://www.ptb.de/cms/en/ptb/fachabteilungen/abt9.html