Organized by Eurachem PT WG (Proficiency Testing Working Group) on September 10-11, 2013, was held 32nd Proficiency Testing Working Group (PT WG), hosted by the Federal Institute for Materials Research and Testing (Bundesanstalt für Materialforschung und -prüfung – BAM), Berlin, Germany, which was first attended by a representative of Serbia from Directorate for Measures and Precious metals.