# The Bread and Flour Regulations 1998, Paragraph: Description


Fine greyish-black powder of such granularity that not more than 0.1 per cent by weight shall remain on a British Standard 410:1969 wire sieve nominal aperture size 150μm and not more than 5 per cent by weight on a British Standard 410:1969 wire sieve nominal aperture size 53μm.

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Source: https://www.legislation.gov.uk/uksi/1998/141/schedule/2/paragraph/wrapper2n1 (the official version)
Page: https://openlegislation.uk/bread-and-flour-regulations-1998/schedule-2/paragraph-wrapper2n1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.