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Standards GB - Chinese national standards - Page 8533
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 6609.8-1986
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Methods for chemical analysis of aluminium oxide--The diphenyl carbazide photometric method for the determination of chromium sesquioxide content
WITHDRAWN published on 24.7.1986
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GB/T 6609.9-1986
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Methods for chemical analysis of aluminium oxide--The lead diethyldithiocarbamate photometric method for the determination of cupric oxide content
WITHDRAWN published on 24.7.1986
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GB/T 661-1992
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Chemical reagents;Ammonium ferrous sulfate
WITHDRAWN published on 1.9.1992
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GB/T 6610.1-1986
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Methods for chemical analysis of aluminium hydroxide--The gravimetric method for the determination of moisture
WITHDRAWN published on 24.7.1986
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GB/T 6610.1-2003
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Chemical analysis methods of aluminium hydroxide—Determination of moisture—Gravimetric method
WITHDRAWN published on 3.11.2003
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GB/T 6610.2-1986
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Methods for chemical analysis of aluminium hydroxide--The gravimetric method for the determination of loss content on ignition
WITHDRAWN published on 24.7.1986
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GB/T 6610.2-2003
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Chemical analysis methods of aluminium hydroxide—Determination of the loss of mass at 1100—Gravimetric method
WITHDRAWN published on 3.11.2003
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GB/T 6610.3-1986
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Methods for chemical analysis of aluminium hydroxide--The molybdenum blue photometric method for the determination of silicon dioxide content
WITHDRAWN published on 24.7.1986
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GB/T 6610.3-2003
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Chemical analysis methods of aluminium hydroxide—Determination of silicon dioxide content—Molybdenum blue photometric method
WITHDRAWN published on 3.11.2003
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GB/T 6610.4-1986
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Methods for chemical analysis of aluminium hydroxide--The ortho-phenanthroline photometric method for the determination of ferric oxide content
WITHDRAWN published on 24.7.1986
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