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Standards GB - Chinese national standards - Page 8787
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 8152.5-1987
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Methods for chemical analysis of lead concentrates--The atomic absorption spectrophotometric methodfor the determination of magnesium oxide content
WITHDRAWN published on 10.8.1987
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GB/T 8152.6-1987
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Methods for chemical analysis of lead concentrates--The polarographic method for the determination of bismuth content
WITHDRAWN published on 10.8.1987
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GB/T 8152.7-1987
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Methods for chemical analysis of lead concentrates--The arsenic-bismuth-molybdenum blue spectrophotometric method for the determination of arsenic content
WITHDRAWN published on 10.8.1987
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GB/T 8152.8-1987
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Methods forchemical analysis of lead concentrates--The DTPM spectrophotometric method for the determination of bismuth content
WITHDRAWN published on 10.8.1987
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GB/T 8152.9-1989
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Methods for chemical analysis of lead concentrates—The fire-assaying methods for the determination of gold and silver content
WITHDRAWN published on 31.3.1989
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GB 8153-1987
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Cryolite natural and artificial--Preparation and storage of test samples
WITHDRAWN published on 1.1.1987
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GB 8154.1-1987
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Methods for chemical analysis of cryolite natural and artificial--The gravimetric method for the determination of moisture content
WITHDRAWN published on 1.1.1987
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GB 8154.10-1987
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Methods for chemical analysis of cryolite natural and artificial--The conventional test for evaluation of free fluorides content
WITHDRAWN published on 1.1.1987
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GB 8154.11-1987
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Natural and artificial cryolite--Determination of sulphur content--X-ray fluorescence spectrometric method
WITHDRAWN published on 1.1.1987
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GB 8154.2-1987
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Methods for chemical analysis of cryolite natural and artificial--The electrometric method for the determination of water content
WITHDRAWN published on 1.1.1987
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