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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).
Natural gas upstream area — Determination and calculation of shale brittleness index. Determination of shale mineral characteristics based on X-ray diffraction method.
Standard published on 25.11.2025
Selected format:Natural gas upstream area — Determination and calculation of shale brittleness index. Determination of shale mechanical characteristics based on triaxial testing method.
Standard published on 19.11.2025
Selected format:Specification for microfilming of drawings. Aperture card for 35 mm microfilm.
Standard published on 31.10.1989
Selected format:Specification for tee slots, tee bolts, tee nuts and tenons.
Standard published on 31.12.1987
Selected format:Recommendations for treatment of water for steam boilers and water heaters.
Standard published on 15.2.1997
Selected format:Aerospace series. Aluminium alloy AL-P2618A. Forging stock.
Standard published on 25.11.2005
Selected format:Specification for hardmetals. Determination of contents of metallic elements by X-ray fluorescence. Solution method.
Standard published on 15.6.1993
Selected format:Fibre reinforced plastics. Determination of the action of test fluids.
Standard published on 15.12.1995
Selected format:Analysis of natural gas. Determination of sulfur compounds. Determination of hydrogen sulfide by laser absorption spectroscopy.
Standard published on 4.2.2026
Selected format:Notation for business reporting.
Standard published on 15.6.2026
Selected format:Latest update: 2026-09-11 (Number of items: 2 300 165)
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