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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
Spectrochemical determination of tungstenmolybdenumniobiumtitanium and zirconium in uranium hexafluoride
Standard published on 19.6.1993
Selected format:Spectrophotometric determination of silicon in ura-nium hexafluoride
Standard published on 19.6.1993
Selected format:Spectrophotometric determination of titanium in uranium hexafluoride
Standard published on 19.6.1993
Selected format:Methods for analysis of uranium hexafluoride - Part 6: Determination of uranium
Standard published on 19.9.2008
Selected format:Analytical method for nickel-63 in water
Standard published on 5.10.2025
Selected format:General principle of nomenclature and classification of radioisotope products
Standard published on 2.7.2008
Selected format:Method for chemical analysis of rocks and ores - General rules and regulations
Standard published on 10.11.2010
Selected format:Methods for chemical analysis of silicate rocks - Part 1: Determination of hygroscopic water content
Standard published on 10.11.2010
Selected format:Methods for chemical analysis of silicate rocks—Part 10:Determination of manganese oxide content
Standard published on 10.11.2010
Selected format:Methods for chemical analysis of silicate rocks - Part 11: Determination of potassium oxide and sodium oxide content
Standard published on 10.11.2010
Selected format:Latest update: 2026-09-08 (Number of items: 2 300 134)
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