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Standards BS - British national standards - Page 349
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).
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BS EN 12120:2022
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Chemicals used for treatment of water intended for human consumption. Sodium hydrogen sulfite.
Standard published on 30.4.2022
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BS EN 12120:2022-TC
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Tracked Changes. Chemicals used for treatment of water intended for human consumption. Sodium hydrogen sulfite.
Standard published on 29.9.2022
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BS EN 12121:2022
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Chemicals used for treatment of water intended for human consumption. Sodium disulfite.
Standard published on 30.4.2022
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BS EN 12121:2022-TC
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Tracked Changes. Chemicals used for treatment of water intended for human consumption. Sodium disulfite.
Standard published on 6.10.2022
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BS EN 12122:2024
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Chemicals used for treatment of water intended for human consumption. Ammonia solution.
Standard published on 10.12.2024
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BS EN 12122:2024-TC
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Tracked Changes. Chemicals used for treatment of water intended for human consumption. Ammonia solution.
Standard published on 24.12.2024
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BS ISO 12123:2018
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Optics and photonics. Specification of raw optical glass.
Standard published on 7.12.2018
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BS EN 12123:2022
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Chemicals used for treatment of water intended for human consumption. Ammonium sulfate.
Standard published on 30.4.2022
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BS EN 12123:2022-TC
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Tracked Changes. Chemicals used for treatment of water intended for human consumption. Ammonium sulfate.
Standard published on 5.10.2022
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BS EN 12124:2022
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Chemicals used for treatment of water intended for human consumption. Sodium sulfite.
Standard published on 31.5.2022
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