Numerous agencies prepare and disseminate documentary (protocol) standards for radiometry and allied fields. Those listed here are either U.S. or international standards organizations. The European Committee for Standardization is called CEN, whose mission is to promote voluntary technical harmonization in Europe in conjunction with worldwide agencies and its European partners. The purposes include the lowering of trade barriers and the promotion of common technical understanding. European standards (e.g., BSI from UK and DIN from Germany) may be accessed via CEN. The Japanese Standards Association also has extensive listings.
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