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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
Erbium oxide—Determination of lanthanum oxide,cerium oxide, praseodymium oxide, neodymium oxide, samarium oxide, europium oxide, gadolinium oxide, terbium oxide, dysprosium oxide, holmium oxide, thulium oxide, ytterbium oxide, lutetium oxide and yttrium oxide contents—Inductively coupled plasma atomic emission spectrographic method
WITHDRAWN published on 5.6.2000
Selected format:Cerium oxide—Determination of lanthanum 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 contets—Inductively coupled plasma atomic emission spectrographic method
WITHDRAWN published on 5.6.2000
Selected format:Chemical analysis methods of rare earth impurities in rare earth metals and their oxides Cerium—Determination of lanthanum,praseodymium,neodymium,samarium,europium,gadolinium,terbium,dysprosium,holmium,erbium,thulium,ytterbium,lutetium and yttrium contents
WITHDRAWN published on 13.4.2006
Selected format:Praseodymium oxide—Determination of lanthanum oxide, cerium 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WITHDRAWN published on 5.6.2000
Selected format:Neodymium oxide—Determination of lanthanum oxide, cerium oxide, praseodymium 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
Selected format:Chemical analysis methods of rare earth impurities in rare earth metals and their oxides Neodymium—Determination of lanthanum,cerium,praseodymium,samarium,europium,gadolinium,terbium,dysprosium,holmium,erbium,thulium,ytterbium,lutetium and yttrium contents
WITHDRAWN published on 13.4.2006
Selected format:Samarium oxide—Determination of lanthanum oxide, cerium oxide, praseodymium oxide, neodymium 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
Selected format:Gadolinium oxide—Determination of lanthanum oxide, cerium oxide, praseodymium oxide, neodymium oxide, samarium oxide,europium 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
Selected format:Chemical analysis methods of rare earth impurities in rare earth metals and their oxides Europium-Determination of lanthanum, cerium, praseodymium, neodymium, samarium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium contents
WITHDRAWN published on 13.4.2006
Selected format:Terbium oxide—Determination of lanthanum oxide, cerium oxide, praseodymium oxide, neodymium oxide, samarium oxide, europium oxide, gadolinium 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
Selected format:Latest update: 2024-09-27 (Number of items: 2 350 600)
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