Welcome to the ICRM 2019, the 22nd International Conference on Radionuclide Metrology and its Applications, at the University of Salamanca! Radionuclide metrology continues to play an important role in the progress on quality of life and environmental sustainability. Radionuclide standarization and measurement methods are essential in the nuclear industry, supporting activities such as radionuclide production, nuclear medicine, absolute dating in oceanic sciences, environmental radioactivity surveillance, characterization of NORM building materials, control of radionuclides in food and drinking water, decommissioning of…