— lantanider (sällsynta jordartsmetaller): lantan, praseodym, samarium, gadolinium, dysprosium, erbium, ytterbium, cerium, neodym, europium, terbium, holmium, tulium, lutenium
coordinating the application by the national reference laboratories of the methods referred to in (a), by organising comparative testing, and proficiency testing in particularEurLex-2 EurLex-2