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Standards GB - Chinese national standards - Page 6645
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 18114.4-2000
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Methods for chemical analysis of monazite concentrates—Determination of titanium oxide content
WITHDRAWN published on 5.6.2000
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GB/T 18114.5-2000
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Methods for chemical analysis of monazite concentrates—Determination of zirconium oxide content
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GB/T 18114.6-2000
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Methods for chemical analysis of monazite concentrates—Determination of sillicon oxide content
WITHDRAWN published on 5.6.2000
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GB/T 18114.7-2000
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Methode for chemical analysis of monazite concentrates—Determination of iron oxide content
WITHDRAWN published on 5.6.2000
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GB/T 18114.8-2000
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Methods for chemical analysis of monazite concentrates—Determination of yttrium oxide content
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GB/T 18114.8-2010
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Chemical analysis methods of rare earth concentrates - Part 8: Determination of fifteen rare earth oxide relative contents - Inductively coupled plasma emission spectrometry
WITHDRAWN published on 14.1.2011
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GB/T 18114.9-2000
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Methods for chemical analysis of monazite concentrates—Determination of phosphor oxide content
WITHDRAWN published on 5.6.2000
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GB/T 18114.9-2010
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Chemical analysis methods of rare earth concentrates - Part 9Determination of phosphorus pentoxide content - Phosphorus-bismuth-molybdenum blue spectrophotometry
WITHDRAWN published on 14.1.2011
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GB/T 18115.1-2000
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Lanthanum oxide—Determination of cerium oxide, praseodymium oxide, neodymium oxide, samarium oxide, europium oxide, gadolinium oxide, terbium oxide, dysprosium oxide, holmium oxide, erbium oxide, thulium oxide, ytterbium oxide, lutetium oxide and yttrium oxide contents—Inductively coupled plasma atomic emission spectrographic method
WITHDRAWN published on 5.6.2000
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GB/T 18115.1-2006
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Chemical analysis methods of rare earth impurities in rare earth metals and their oxides Lanthanum—Determination of cerium,praseodymium,neodymium,samarium,europium,gadolinium,terbium,dysprosium,holmium,erbium,thulium,ytterbium,lutetium and yttrium contents
WITHDRAWN published on 13.4.2006
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