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Standards GB - Chinese national standards - Page 7594
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 3885.12-1983
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Methods for chemical analysis of spodumenite and lepidolite concentrates--The gravimetric method for the determination of loss on ignition
WITHDRAWN published on 19.10.1983
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GB/T 3885.2-1983
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Methods for chemical analysis of spodumenite and lepidolite concentrates--The atomic absorption spectrophotometric method for the determination of rubidiumoxie and caesium oxide contents
WITHDRAWN published on 19.10.1983
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GB/T 3885.3-1983
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Methodsfor chemical analysis of spodumenite and lepidolite concentrates--The gravimetric-molybdenum blue photometric method for the determination of silicon dioxide content
WITHDRAWN published on 19.10.1983
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GB/T 3885.4-1983
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Methods for chemical analysis of spodumenite and lepidolite concentrates--The EDTAvolumetric method for the determination of aluminium oxide content
WITHDRAWN published on 19.10.1983
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GB/T 3885.5-1983
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Methods forchemical analysis of spodumenite and lepidolite concentrates--The EDTA volumetric method for the determination of ferric oxide content
WITHDRAWN published on 19.10.1983
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GB/T 3885.6-1983
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Methods for chemical analysis of spodumenite and lepidolite concentrates--The o-phenanthroline photometric method for the determination of ferric oxide content
WITHDRAWN published on 19.10.1983
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GB/T 3885.7-1983
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Methods forchemical analysis of spodumenite and lepidolite concentrates--The molybdenum blue photometric method for the determination of phosphorus pentoxide content
WITHDRAWN published on 19.10.1983
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GB/T 3885.8-1983
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Methods for chemical analysis of spodumenite and lepidolite concentrates--The chromazurol S and cetyltrimethyl ammonium bromide photometric method for the determination of beryllium oxide content
WITHDRAWN published on 19.10.1983
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GB/T 3885.9-1983
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Methods for chemical analysis of spodumenite and lepidolite concentrates--The atomic absorption spectrophotometric method for the determination of calcium oxide and magnesium oxide contents
WITHDRAWN published on 19.10.1983
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GB 3886-1983
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Power thyristor converters for adjustable speed D. C. motor drives
WITHDRAWN published on 1.1.1983
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