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Standards GB - Chinese national standards - Page 7794

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GB/T 3884.14-2012 WITHDRAWN

Methods for chemical analysis of copper concentrates - Part 14: Determination of gold and silver - Fire assay gravimetric and flame atomic absorption spectrometric method

WITHDRAWN published on 31.12.2012

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GB 3884.15-1986 WITHDRAWN

WITHDRAWN published on 1.1.1986

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GB/T 3884.15-2014 WITHDRAWN

Methods for chemical analysis of copper concentratesPart 15Determination of iron contentPotassium dichromate titration method

WITHDRAWN published on 5.12.2014

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GB/T 3884.16-2014 WITHDRAWN

Methods for chemical analysis of copper concentratesPart 16 Determination of silicon dioxide contentK2SiF6 titrimetric method and Gravimetric method

WITHDRAWN published on 5.12.2014

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GB/T 3884.18-2014 WITHDRAWN

Methods for chemical analysis of copper concentrates—Part 18:Determination of arsenic,antimony,bismuth,lead,zinc,nickel,cadmium,cobalt,magnesium oxide,calcium oxide contents—Inductively coupled plasma atomic emission spectrometry

WITHDRAWN published on 5.12.2014

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GB/T 3884.2-2000 WITHDRAWN

Methods for chemical analysis of copper concentrates—Determination of gold and silver content

WITHDRAWN published on 16.2.2000

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GB/T 3884.2-2012 WITHDRAWN

Methods for chemical analysis of copper concentrates - Part 2: Determination of gold and silver contents - Flame atomic absorption spectrmetric method and fire assay method

WITHDRAWN published on 31.12.2012

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