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GB - Chinese national standards - Page 137

Standards GB - Chinese national standards - Page 137

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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Preview GB/T 11848.2-2025 5.10.2025
GB/T 11848.2-2025

Methods for analysis of uranium ore concentrate—Part 2Determination of nitric acid-insoluble uranium—Spectrophotometric method

Standard published on 5.10.2025

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Preview GB/T 11848.3-2025 5.10.2025
GB/T 11848.3-2025

Methods for analysis of uranium ore concentrate—Part 3Determination of extractable organic material—Gravimetric method

Standard published on 5.10.2025

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Preview GB/T 11848.4-2025 5.10.2025
GB/T 11848.4-2025

Methods for analysis of uranium ore concentrate—Part 4Determination of arsenic and mercury—Hydride generation-atomic fluorescence spectrometry

Standard published on 5.10.2025

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Preview GB/T 11848.5-2025 5.10.2025
GB/T 11848.5-2025

Methods for analysis of uranium ore concentrate—Part 5Determination of carbonate—Infrared absorption method

Standard published on 5.10.2025

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Preview GB/T 11848.6-2025 5.10.2025
GB/T 11848.6-2025

Methods for analysis of uranium ore concentrate—Part 6Determination of fluoride—Ion-selective electrode method

Standard published on 5.10.2025

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Preview GB/T 11848.7-2025 5.10.2025
GB/T 11848.7-2025

Methods for analysis of uranium ore concentrate—Part 7Determination of halides—Volhard titration

Standard published on 5.10.2025

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Preview GB/T 11848.8-2025 5.10.2025
GB/T 11848.8-2025

Methods for analysis of uranium ore concentrate—Part 8Determination of moisture—Gravimetric method

Standard published on 5.10.2025

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Preview GB/T 11848.9-2025 5.10.2025
GB/T 11848.9-2025

Methods for analysis of uranium ore concentrate—Part 9Determination of silicon—Spectrophotometric method

Standard published on 5.10.2025

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Preview GB/T 11849-2008 19.6.2008
GB/T 11849-2008

Heavy water tank

Standard published on 19.6.2008

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Preview GB/T 1185-2006 13.12.2006
GB/T 1185-2006

Surface imperfections of optical elements

Standard published on 13.12.2006

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