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Standards GB - Chinese national standards - Page 8789
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 8156.2-1987
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Methods for chemical analysis of aluminium fluoride for industrial use--The electrometric method for the determination of water content
WITHDRAWN published on 27.5.1987
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GB/T 8156.3-1987
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Methods for chemical analysis of aluminum fluoride for industrial use--The distillation-thorium nitrate volumetric method for the determination of fluoride content
WITHDRAWN published on 10.8.1987
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GB/T 8156.4-1987
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Methods for chemical analysis of aluminium fluoride for industrial use--The EDTA volumetric method for determination of aluminium content
WITHDRAWN published on 10.8.1987
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GB/T 8156.5-1987
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Methods for chemical analysis of aluminium fluoride for industrial use--The flame emission photometric method for the determination of sodium content
WITHDRAWN published on 10.8.1987
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GB/T 8156.6-1987
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Methods for chemical analysis of aluminium fluoride for industrial use--The molybdenum blue photometric method for the determination of silica content
WITHDRAWN published on 10.8.1987
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GB/T 8156.7-1987
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Methods for chemical analysis of aluminium fluoride for industrial use--The 1,10-phenanthroline photometric method for the determination of iron content
WITHDRAWN published on 10.8.1987
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GB/T 8156.8-1987
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Methods for chemical analysis of aluminium fluoride for industrial use--The barium sulphate gravimetric method for the determination of sulphate content
WITHDRAWN published on 10.8.1987
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GB/T 8156.9-1987
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Methods for chemical analysis of aluminium fluoride for industrial use--The molybdenum blue photometric method for the determination of phosphorus content
WITHDRAWN published on 10.8.1987
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GB/T 8157-1987
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Preparation and storage of test samples of sodium fluoride
WITHDRAWN published on 10.8.1987
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GB/T 8158.1-1987
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Methods for chemical analysis of sodium fluoride--The gravimetric method for the determination of moisture content
WITHDRAWN published on 10.8.1987
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