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Standards GB - Chinese national standards - Page 5120
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 6679-2003
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General rules for sampling solid chemical products
Standard published on 11.10.2003
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GB/T 6680-2003
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General rules for sampling liquid chemical products
Standard published on 11.10.2003
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GB/T 6681-2003
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General rules for sampling gaseous chemical products
Standard published on 11.10.2003
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GB/T 6682-2008
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Water for analytical laboratory use - Specification and test methods
Standard published on 15.5.2008
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GB/T 6683.1-2021
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Petroleum and related products—Precision of measurement methods and results—Part 1: Determination of precision data in relation to methods of test
Standard published on 11.10.2021
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GB/T 6683.2-2025
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Pertroleum and related products—Precision of measurement methods and results—Part 2: Interpretation and application of precision data in relation to methods of test
Standard published on 2.12.2025
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GB/T 6683.3-2023
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Petroleum and related products—Precision of measurement methods and results—Part 3: Monitoring and verification of published precision data in relation to methods of test
Standard published on 23.5.2023
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GB/T 6683.4-2026
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Petroleum and related products—Precision of measurement methods and results—Part 4: Use of statistical control charts to validate ""in-statistical-control"" status for the execution of a test method standard in a single laboratory
Execute Date: october 2026
Standard published on 31.3.2026
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GB/T 6684-2002
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Chemical reagent--Hydrogen peroxide 30%
Standard published on 29.5.2002
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GB/T 6685-2007
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Chemical reagent - Hydroxylammonium chloride
Standard published on 25.10.2007
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