# Council Regulation (EC) No 428/2009 of 5 May 2009 setting up a Community regime for the control of exports, transfer, brokering and transit of dual-use items (Recast), Division [1A227]: High-density (lead glass or other) radiation shielding windows, having all of the following characteristics, and specially designed frames therefor:


a..A ‘cold area’ greater than 0,09 m2;
b..A density greater than 3 g/cm3; and
c..A thickness of 100 mm or greater.
Technical Note:
In 1A227 the term ‘cold area’ means the viewing area of the window exposed to the lowest level of radiation in the design application.

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Source: https://www.legislation.gov.uk/eur/2009/428/annex/I/division/3/division/1/division/1A227 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-428/annex-I/division-3/division-1/division-1A227
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.