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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
Determination of fluorine and chlorine in uranium dioxide powder and pellets—Pyrohydrolysis ion-selective electrode method
Standard published on 3.7.2015
Selected format:Determination of silicon in uranium dioxide powder and pellets by spectrophotometry
Standard published on 3.7.2015
Selected format:Determination of specific surface area of uranium dioxide powder by BET capacity method
Standard published on 19.6.2008
Selected format:Methods for analysis of uranium ore concentrate - Part 1: Determination of uranium by ferrous sulfate reducion potassion dichromate titrimetry
Standard published on 19.9.2008
Selected format:Methods for analysis of uranium ore concentrate—Part 10Determination of sulfur—Infrared absorption method
Standard published on 5.10.2025
Selected format:Methods for analysis of uranium ore concentrate—Part 11Determination of thorium—Inductively coupled plasma mass spectrometry
Standard published on 5.10.2025
Selected format:Methods for analysis of uranium ore concentrate—Part 12Determination of boron—Inductively coupled plasma mass spectrometry
Standard published on 5.10.2025
Selected format:Methods for analysis of uranium ore concentrate—Part 14Determination of potassium and sodium—Atomic absorption spectrometry
Standard published on 5.10.2025
Selected format:Methods for analysis of uranium ore concentrate—Part 15Determination of iron, calcium, magnesium, molybdenum, titanium, vanadium and zirconium—Inductively coupled plasma optical emission spectrometry
Standard published on 5.10.2025
Selected format:Methods for analysis of uranium ore concentrate—Part 16Determination of phosphorus—Spectrophotometric method
Standard published on 5.10.2025
Selected format:Latest update: 2026-06-04 (Number of items: 2 281 409)
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