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GB - Chinese national standards - Page 6569

Standards GB - Chinese national standards - Page 6569

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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Preview GB/T 17416.1-1998 17.6.1998
GB/T 17416.1-1998 WITHDRAWN

Method for chemical analysis of Zirconium ores—Determination of Zirconium (Hafnium) content—Xylenol orange photometric method

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Preview GB/T 17416.2-1998 17.6.1998
GB/T 17416.2-1998 WITHDRAWN

Method for chemical analysis of Zirconium ores—Determination of Zirconium and Hafnium contents—X-ray fluorescence spectrometric method

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Preview GB/T 17417.1-1998 17.6.1998
GB/T 17417.1-1998 WITHDRAWN

Method for chemical analysis of rare earth ores—Determination of separated rare earth content—Preconcentration and separation by cation exchange resin,ICP-AES method

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Preview GB/T 17417.2-1998 17.6.1998
GB/T 17417.2-1998 WITHDRAWN

Method for chemical analysis of rare earth ores—Determination of scandium content—ICP-AES method

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Preview GB/T 17418.1-1998 17.6.1998
GB/T 17418.1-1998 WITHDRAWN

Methods for analysis of noble metals in geochemical samples—General rules and regulations

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Preview GB/T 17418.2-1998 17.6.1998
GB/T 17418.2-1998 WITHDRAWN

Methods for analysis of noble metals in geochemical samples—Determination of platinum and rhodium content-Preconcentration by thiourea-Catalytic polarographic method

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Preview GB/T 17418.3-1998 17.6.1998
GB/T 17418.3-1998 WITHDRAWN

Methods for analysis of noble metals in geochemical samples—Determination of palladium content-Preconcentration by thiourea-Graphite furnace atomic absorption spectrophotometric method

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Preview GB/T 17418.4-1998 17.6.1998
GB/T 17418.4-1998 WITHDRAWN

Methods for analysis of noble metals in geochemical samples—Determination of iridium content—Preconcentration by thiourea—Catalytic spectrophotometric method

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Preview GB/T 17418.5-1998 17.6.1998
GB/T 17418.5-1998 WITHDRAWN

Methods for analysis of noble metals in geochemical samples—Determination of ruthenium and osmium content-Separation by distillation—Catalytic spectrophotometric method

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Preview GB/T 17418.6-1998 17.6.1998
GB/T 17418.6-1998 WITHDRAWN

Methods for analysis of noble metals in geochemical samples—Determination of platinum palladium and gold content-Preconcentration by fire assay-Emission spectrographic method

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