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Standards GB - Chinese national standards - Page 757
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 17417.1-2010
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Method for chemical analysis of rare earth ores - Part 1: Determination of rare earths
Standard published on 10.11.2010
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GB/T 17417.2-2010
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Method for chemical analysis of rare earth ores - Part 2: Determination of scandium content
Standard published on 10.11.2010
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GB/T 17418.1-2010
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Methods for analysis of noble metals in geochemical samples - Part 1General rules and regulations
Standard published on 10.11.2010
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GB/T 17418.2-2010
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Methods for analysis of noble metals in geochemical samples - Part 2Determination of platinum and rhodium content-Preconcentration by thiourea-catalytic polarographic method
Standard published on 10.11.2010
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GB/T 17418.3-2010
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Methods for analysis of noble metals in geochemical samples - Part 3: Determination of palladium content - Preconcentration by thiourea - graphite furnace atomic absorption spectrophotometric method
Standard published on 10.11.2010
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GB/T 17418.4-2010
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Methods for analysis of noble metals in geochemical samples - Part 4: Determination of iridium content - Preconcentration by thiourea-catalytic spectrophotometric method
Standard published on 10.11.2010
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GB/T 17418.5-2010
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Methods for analysis of noble metals in geochemical samples - Part 5: Determination of ruthenium and osmium content - Separationby distillation-catalytic spectrophotometric method
Standard published on 10.11.2010
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GB/T 17418.6-2010
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Methods for analysis of noble metals in geochemical samples - Part 6: Determination of platinum, palladium and gold content - Preconcentration by fire assay - emission spectrometry
Standard published on 10.11.2010
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GB/T 17418.7-2010
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Methods for analysis of noble metals in geochemical samples - Part 7: Determination of platinum group elements - By nickel sulfide fire assay-inductively coupled plasma mass spectrometry
Standard published on 10.11.2010
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GB/T 17419-2018
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Foliar fertilizer with organic matter
Standard published on 14.5.2018
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