Standards GB - Chinese national standards - Page 139

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 11848.14-2025

Methods for analysis of uranium ore concentrate—Part 14Determination of potassium and sodium—Atomic absorption spectrometry
Execute Date: may 2026

Standard published on 5.10.2025

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GB/T 11848.15-1991

Determination of ironcalciummagnesiummolybdenumtitanium and vanadium in uranium oreconcentrate by atomic absorption spectrometry

Standard published on 26.4.1991

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GB/T 11848.15-2025

Methods for analysis of uranium ore concentrate—Part 15Determination of iron, calcium, magnesium, molybdenum, titanium, vanadium and zirconium—Inductively coupled plasma optical emission spectrometry
Execute Date: may 2026

Standard published on 5.10.2025

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GB/T 11848.16-1991

Determination of phosphorus in uranium ore concentrate by spectrophotometry

Standard published on 26.4.1991

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