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Standards GB - Chinese national standards - Page 7496
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 3255.2-1982
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Chemical analysis of antimony trisulfide--The barium sulfate gravimetric method for determination of combined sulfur
WITHDRAWN published on 1.1.1982
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GB 3255.3-1982
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Chemical analysis of antimony trisulfide--The combustion-iodine volumetric method for determination of free sulfur
WITHDRAWN published on 1.1.1982
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GB 3255.4-1982
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Chemical analysis of antimony trisulfide--Gravimetric method for determination of aqua-regia insolubles
WITHDRAWN published on 1.1.1982
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GB 3255.5-1982
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Chemical analysis of antimony trisulfide--Gravimetric method for determination of hydrochloric acid insolubles
WITHDRAWN published on 1.1.1982
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GB/T 3256.1-1982
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Chemical analysisof zirconium powder for electro-vacuum uses--The gravimetric method for determination of total zirconium and active zirconium
WITHDRAWN published on 21.6.1982
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GB/T 3256.2-1982
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Chemical analysisof zirconium powder for electro-vacuum uses--The sulfosalicylic acid photometric method for determination of iron
WITHDRAWN published on 21.6.1982
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GB/T 3256.3-1982
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Chemical analysis of zirconium powder for electro-vacuum uses--The molybdenum blue photometric method for determination of silicon
WITHDRAWN published on 21.6.1982
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GB/T 3256.4-1982
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Chemical analysis of zirconium powder for electro-vacuum uses--The molybdenum blue photometric method for determination of phosphorus
WITHDRAWN published on 21.6.1982
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GB/T 3256.5-1982
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Chemical analysis of zirconium powder for electro-vacuum uses--The atomic absorption spectrophotometric method for determination of calcium and magnesium
WITHDRAWN published on 21.6.1982
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GB/T 3256.6-1982
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Chemical analysis of zirconium powder for electro-vacuum uses--The chrome azurol S photometric method for determination of aluminium
WITHDRAWN published on 21.6.1982
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