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Standards GB - Chinese national standards - Page 5453
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 10728-1989
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Chemical reagent--Thymol phthalein
WITHDRAWN published on 31.3.1989
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GB/T 10729-1989
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Chemical reagent--Phenolphthalien
WITHDRAWN published on 31.3.1989
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GB 10730-1989
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Primary chemical—Potassium hydrogen phthalate
WITHDRAWN published on 31.3.1989
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GB 10731-1989
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Primary chemical—Potassium dichromate
WITHDRAWN published on 31.3.1989
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GB 10732-1989
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Primary chemical—Potassium chloride
WITHDRAWN published on 31.3.1989
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GB 10733-1989
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Primary chemical—Sodium chloride
WITHDRAWN published on 31.3.1989
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GB 10734-1989
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Primary chemical—Ethylenediaminetetraacetic acid disodium salt
WITHDRAWN published on 31.3.1989
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GB 10735-1989
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Primary chemical—Sodium carbonate,anhydrous
WITHDRAWN published on 31.3.1989
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GB 10736-1989
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Working chemical Potassium chloride
WITHDRAWN published on 1.3.1989
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GB 10737-1989
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Working chemical General rules for the potentiometric weight titration
WITHDRAWN published on 31.3.1989
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