Talk Title: Precision Isotope Ratios: from measurements to the Periodic Table

Juris Meija is a research officer at the National Research Council Canada working in the area of chemical metrology, international documentary standards, and certified reference material development. His expertise lies in theoretical analytical chemistry, isotope ratio measurements, and data analysis. He has served as the Chair of the IUPAC Commission on Isotopic Abundances and Atomic Weights and has been actively involved in many international activities such as the revisions of the Guide to the Expression of Uncertainty in Measurement (GUM) and redefinition of the mole.