# Council Regulation (EC) No 1504/2004 of 19 July 2004 amending and updating Regulation (EC) No 1334/2000 setting up a Community regime for the control of exports of dual-use items and technology, Division

Extent: E+W+S+N.I.

Note 2: In 0C004, 'boron equivalent' (BE) is defined as the sum of BEz for impurities (excluding BEcarbon since carbon is not considered an impurity) including boron, where:
BEz (ppm) = CF × concentration of element Z in ppm;
where CF is the conversion factor = σ Z A B σ B A Z
and σB and σZ are the thermal neutron capture cross sections (in barns) for naturally occurring boron and element Z respectively; and AB and AZ are the atomic masses of naturally occurring boron and element Z respectively.

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Source: https://www.legislation.gov.uk/eur/2004/1504/annex/I/division/LIST/division/CATEGORY/division/3/annotation/5 (the official version)
Page: https://openlegislation.uk/eu-regulation-2004-1504/annex-I/division-LIST/division-CATEGORY/division-3/annotation/5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.