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Standards GB - Chinese national standards - Page 97
Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
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GB/T 11212-2013
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Sodium hydroxide for chemical fiber use
Standard published on 6.9.2013
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GB/T 11213.1-2007
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Sodium hydroxide for chemical fiber use - Determination of sodium hydroxide content
Standard published on 13.8.2007
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GB/T 11213.2-2007
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Sodium hydroxide for chemical fiber use - Determination of sodium chloride content - Spectrometric method
Standard published on 13.8.2007
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GB/T 11213.3-2003
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Sodium hydroxide for chemical fiber use--Determination of the calcium content--EDTA complexometric method
Standard published on 25.8.2003
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GB/T 11213.4-2006
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Sodium hydroxide for chemical fiber use - Determination of silicon content - Reduced molybdosilicate spectrophotometric method
Standard published on 29.12.2006
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GB/T 11213.5-2006
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Sodium hydroxide for chemical fiber use - Determination of sulphate content
Standard published on 29.12.2006
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GB/T 11213.7-2008
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Test methods of sodium hydroxide for chemical fiber use -Part 7:Determination of copper content-spectrometric method
Standard published on 18.6.2008
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GB/T 11214-1989
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Analytical determination of radium-226 in water
Standard published on 31.3.1989
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GB 11215-1989
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The general regulation for environmental radiological assessment
Standard published on 31.3.1989
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GB 11217-1989
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The regulations for monitoring effluents atnuclear facilities
Standard published on 31.3.1989
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