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Standards GB - Chinese national standards - Page 8391
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 6273-1986
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Cover glasses for microscopes
WITHDRAWN published on 1.1.1986
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GB 6274-1986
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WITHDRAWN published on 1.1.1986
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GB/T 6274-1997
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Fertilizers and soil conditioners—Vocabulary
WITHDRAWN published on 24.6.1997
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GB/T 6275-1986
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Ammonium hydrogen carbonate for industrial use
WITHDRAWN published on 18.4.1986
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GB/T 6276.1-1986
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Ammonium hydrogen carbonate for industrial use—Determination of total alkalinity—Volumetric method
WITHDRAWN published on 18.4.1986
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GB/T 6276.1-2008
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Determination of ammonium hydrogen carbonate for industrial use—Part 1:Ammonium hydrogen carbonate content—Acid-base method
WITHDRAWN published on 17.6.2008
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GB/T 6276.2-1986
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Ammonium hydrogen carbonate for industrial use—Determination of chloride content—Potentiometric method
WITHDRAWN published on 18.4.1986
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GB/T 6276.2-2010
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Determination of ammonium hydrogen carbonate for industrial use—Part 2:Chloride content—Potentiometric titration method
WITHDRAWN published on 30.6.2010
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GB/T 6276.3-1986
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Ammonium hydrogen carbonate for industrial use—Determination sulphide content—Visible turbidimetric method
WITHDRAWN published on 18.4.1986
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GB/T 6276.3-2010
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Determination of ammonium hydrogen carbonate for industrial use—Part 3:Sulphide content—Visible turbidimetric method
WITHDRAWN published on 30.6.2010
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