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Standards GB - Chinese national standards - Page 8409
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 6365-1986
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Surface active agents—Determination of free alkalinity or free acidity—Titrimetric method
WITHDRAWN published on 8.5.1986
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GB/T 6366-1992
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Surface active agents—Determination of mineral sulfate content—Titrimetric method
WITHDRAWN published on 10.12.1992
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GB 6367-1990
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WITHDRAWN published on 1.1.1990
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GB/T 6367-1997
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Surface active agents—Preparation of water with known calcium hardness
WITHDRAWN published on 14.10.1997
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GB 6368-1986
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WITHDRAWN published on 1.1.1986
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GB/T 6368-1993
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Surface active agents—Determination of pH of aqueous solutions—Potentiometric method
WITHDRAWN published on 6.8.1993
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GB/T 6369-1986
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Surface active agents—Measurement of emulsifying power—Colorimetric method
WITHDRAWN published on 8.5.1986
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GB/T 637-1988
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Chemical reagent—Sodium thiosulfate pentahydrate
WITHDRAWN published on 20.9.1988
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GB 6370-1986
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Surface active agents--Anionic surface active agents--Determination of solubility in water
WITHDRAWN published on 1.1.1986
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GB/T 6370-1996
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Surface active agents—Anionic surface active agents—Determination of solubility in water
WITHDRAWN published on 22.8.1996
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