Standards GB - Chinese national standards - Page 7564

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GB/T 3286.2-2012 WITHDRAWN

Methods for chemical analysis of limestone and dolomite - Part 2: The determination of silicon dioxide content - The silicomolybdic blue spectrophotometric method and the perchloric acid dehydration gravimetric method

WITHDRAWN published on 5.11.2012

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GB 3286.3-1982 WITHDRAWN

WITHDRAWN published on 1.1.1982

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GB/T 3286.3-1998 WITHDRAWN

Methods for chemical analysis of limestone and dolomite—The determination of aluminium oxide content

WITHDRAWN published on 7.12.1998

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GB/T 3286.3-2012 WITHDRAWN

Methods for chemical analysis of limestone and dolomite - Part 3: The determination of aluminium oxide content - The chrome azurol S spectrophotometric method and the complexometric titration method

WITHDRAWN published on 5.11.2012

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