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Standards GB - Chinese national standards - Page 5381
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 10304.11-1988
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Determination of heavy metals in cathode carbonate
WITHDRAWN published on 30.12.1988
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GB/T 10304.12-1988
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Determination of ignition losses in cathode carbonate
WITHDRAWN published on 30.12.1988
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GB/T 10304.2-1988
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Determination of BaCO3 in cathode carbonate by dichromate iodimetry
WITHDRAWN published on 30.12.1988
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GB/T 10304.3-1988
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Determination of CaCO3 in cathods carbonate by complexometric titration
WITHDRAWN published on 30.12.1988
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GB/T 10304.4-1988
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Determination of CaCO3 SrCO3 in cathode carbonate by atomic absorption spectrophotometry
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GB/T 10304.5-1988
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Determination of nitrate in cathode carbonate
WITHDRAWN published on 30.12.1988
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GB/T 10304.6-1988
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Determination of Na in cathode carbonate by atomic absorption spectrophotometry
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GB/T 10304.7-1988
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Determination of nonsolute for chloric acid in cathode carbonate
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GB/T 10304.8-1988
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Determination of Fe in cathode carbonate
WITHDRAWN published on 30.12.1988
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GB/T 10304.9-1988
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Determination of chloride in cathode carbonate
WITHDRAWN published on 30.12.1988
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