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Standards GB - Chinese national standards - Page 5407
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 8151.6-2012
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Methods for chemical analysis of zinc concentrates - Part 6 Determination of copper content - The flame atomic absorption spectrometric method
Standard published on 31.12.2012
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GB/T 8151.7-2012
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Methods for chemical analysis of zinc concentrates - Part 7 Determination of arsenic content - Hydride generation-atomic fluorescence spectrometry and the potassium bromate titrimetric method
Standard published on 31.12.2012
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GB/T 8151.8-2012
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Methods for chemical analysis of zinc concentrates - Part 8 Determination of cadmium content - The flame atomic absorption spectrometric method
Standard published on 31.12.2012
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GB/T 8151.9-2012
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Methods for chemical analysis of zinc concentrates - Part 9 Determination of fluorine content - The ion selective electrode method
Standard published on 31.12.2012
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GB/T 8152.1-2006
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Methods for chemical analysis of lead concentratesDetermination of lead contentEDTA titration method after acid digestion
Standard published on 24.8.2006
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GB/T 8152.10-2006
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Methods for chemical analysis of lead concentratesDetermination of silver and gold contentFire assay and flame atomic absorption spectrometric method using scorification or cupellation
Standard published on 24.8.2006
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GB/T 8152.11-2023
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Methods for chemical analysis of lead concentrates—Part 11: Determination of mercury content—Atomic fluorescence spectrometry and direct mercury determining with solid injection method
Standard published on 23.5.2023
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GB/T 8152.12-2006
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Methods for chemical analysis of lead concentratesDetermination of cadmium contentFlame atomic absorption spectrometric method
Standard published on 24.8.2006
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GB/T 8152.13-2017
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Methods for chemical analysis of lead concentrates—Part 13Determination of thallium content—Inductively coupled plasma mass spectrometry and inductively coupled plasma-atomic emission spectrometry
Standard published on 14.10.2017
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GB/T 8152.14-2019
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Methods for chemical analysis of lead concentrates—Part 14: Determination of silicon dioxide content—Molybdenum blue spectrophotometry
Standard published on 30.8.2019
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