In view of the ever increasing globalization of economy, the removal o
f barriers to trade has become a central political task. An important
contribution to this objective can be made by harmonizing legal regula
tions? written standards, accreditation and metrology on an internatio
nal level. The article will describe which role Sour relevant internat
ional organizations (WTO, ISO/IEC, ILAC and BIPM) will play, and point
in particular to the consequences the objective ''one-stop measuremen
t to achieve worldwide recognition'' will have for metrology.