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Standards GB - Chinese national standards - Page 5130
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 6730.67-2009
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Iron ores - Determination of arsenic content - Hydride generation atomic absorption spectrometric method
Standard published on 30.10.2009
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GB/T 6730.68-2009
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Iron ores - Determination of loss on ignition - Gravimetric method
Standard published on 30.10.2009
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GB/T 6730.69-2010
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Iron ores - Determination of fluoride and chloride content - Ion chromatography
Standard published on 10.1.2011
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GB/T 6730.7-2016
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Iron ores—Determination of metallic iron content—Sulfosalicylic acid spectrophotometric method
Standard published on 13.10.2016
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GB/T 6730.7-2016E
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Iron ores—Determination of metallic iron content—Sulfosalicylic acid spectrophotometric method
Standard published on 13.10.2016
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GB/T 6730.70-2013
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Iron ores - Determination of total iron content - Titrimetric method after tin() chloride reduction
Standard published on 9.5.2013
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GB/T 6730.71-2014
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Iron oresDetermination of acid-soluble iron(II) contentTitrimetric method
Standard published on 27.3.2014
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GB/T 6730.72-2016
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Iron ores—Determination of arsenic, chromium, cadmium, lead and mercury content—Inductively coupled plasma-mass spectrometry method (ICP-MS)
Standard published on 24.2.2016
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GB/T 6730.73-2024
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Iron ores—Determination of total iron content—EDTA photometric titration method
Standard published on 25.4.2024
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GB/T 6730.74-2017
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Iron oresDetermination of magnesium contentFlame atomic absorption spectrometric method
Standard published on 7.9.2017
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