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Standards GB - Chinese national standards - Page 5711
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 12496.16-1990
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Test method of wooden activated carbon--Cyanide content
WITHDRAWN published on 1.1.1990
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GB/T 12496.17-1990
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Test method of wooden activated carbon--Uncarbonized constituent
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GB/T 12496.18-1990
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Test method of wooden activated carbon--Apparent density
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GB/T 12496.19-1990
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Test method of wooden activated carbon--Particle size distribution
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GB/T 12496.19-1999
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Test methods of wooden activated carbon—Determination of iron content
WITHDRAWN published on 10.11.1999
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GB/T 12496.2-1990
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Test method of wooden activated carbon--Adsorption of methylene blue
WITHDRAWN published on 1.1.1990
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GB/T 12496.20-1990
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Test method of wooden activated carbon--Acid or alkal
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GB/T 12496.21-1990
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Test method of wooden activated carbon--Moisture
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GB/T 12496.22-1990
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Test method of wooden activated carbon--Determination abrasion resistance
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GB/T 12496.3-1990
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Test method of wooden activated carbon--Adsorption of acetic acid
WITHDRAWN published on 1.1.1990
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