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BSi – The company, BSI British Standards, is a national standards body of the United Kingdom (NBS) and it was actually the very first one in the world. It represents national and social interests of Great Britain in all European and international standardization organizations and in the development of business information of British institutions of all sizes and sectors. BSI British Standards cooperates with manufacturing and service industries, various companies, the government and with consumers as well in order to facilitate the production of British, European and international standards. A part of BSI Group, BSI British Standards, works closely with the government of the United Kingdom, especially in the Department for Innovations, Universities and Skills (DIUS).
Methods for the determining optical properties of pulp paper and board. Measurement of diffuse ISO brightness (blue reflectance factor) of paper and board.
WITHDRAWN published on 18.3.1969
Selected format:Methods for determining optical properties of pulp, paper and board. Measurement of diffuse blue reflectance factor (ISO brightness) of paper and board.
WITHDRAWN published on 29.8.1975
Selected format:Methods for determining optical properties of pulp, paper and board. Measurement of diffuse blue reflectance factor (ISO brightness) of paper and board.
WITHDRAWN published on 30.6.1980
Selected format:Methods for the determining optical properties of pulp paper and board. Measurement of the ISO opacity (paper backing) of paper.
WITHDRAWN published on 26.2.1970
Selected format:Methods for determining optical properties of pulp, paper and board. Determination of opacity (paper backing) of paper and board by the diffuse reflectance method.
WITHDRAWN published on 29.8.1975
Selected format:Methods for determining optical properties of pulp, paper and board. Determination of opacity (paper backing) of paper and board by the diffuse reflectance method.
WITHDRAWN published on 30.6.1980
Selected format:Methods for determining optical properties of pulp, paper and board. Measurement of diffuse blue reflectance factor (ISO brightness) of pulps.
WITHDRAWN published on 31.3.1980
Selected format:Specification for independent thermostatically controlled central heating boilers with rated outputs up to 44 KW. Boilers with undergrate ash removal designed to burn solid smokeless fuels.
WITHDRAWN published on 24.4.1969
Selected format:Domestic solid mineral fuel fired boilers with rated output up to 45 kW. Boilers with undergrate ash removal.
WITHDRAWN published on 1.1.1979
Selected format:Domestic solid mineral fuel fired boilers with rated output up to 45 kW. Domestic solid mineral fuel fired boilers with rated output up to 45 kw. Specification for boilers with undergrate ash removal.
WITHDRAWN published on 15.5.2001
Selected format:Latest update: 2026-01-21 (Number of items: 2 257 297)
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