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Standards GB - Chinese national standards - Page 6104
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 14352.1-1993
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Methods for chemical analysis of tungsten ores and molybdenum ores—Determination of tungsten content—Potassium thiocynate photometric method
WITHDRAWN published on 12.5.1993
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GB/T 14352.10-1993
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Methods for chemical analysis of tungsten ores and molybdenum ores—Determination of arsenic content—Silver diethyl-dithiocarbamate photometric method
WITHDRAWN published on 12.5.1993
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GB/T 14352.10-2010
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Methods for chemical analysis of tungsten ores and molybdenum ores - Part 10Determination of arsenic content
WITHDRAWN published on 10.11.2010
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GB/T 14352.11-1993
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Methods for chemical analysis of tungsten ores and molybdenum ores—Determination of bismuth content—Flame atomic absorption spectrometric method
WITHDRAWN published on 12.5.1993
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GB/T 14352.12-1993
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Methods for chemical analysis of tungsten ores and molybdenum ores—Determination of silver content—Flame atomic absorption spectrometric method after metyl iso-butyl ketone extraction
WITHDRAWN published on 12.5.1993
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GB/T 14352.13-1993
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Methods for chemical analysis of tungsten ores and molybdenum ores—Determination of tin content—Polarographic method in hydrochloric acid-ammoninm chloride medium
WITHDRAWN published on 12.5.1993
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GB/T 14352.14-1993
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Methods for chemical analysis of tungsten ores and molybdenum ores—Determination of gallium content—Rhodamine B photometric method after butylacetate extraction
WITHDRAWN published on 12.5.1993
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GB/T 14352.15-1993
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Methods for chemical analysis of tungsten ores and molybdenum ores—Determination of germanium content—Distillation separation-phenyl fluorone cetyltrimethyl-ammonium bromide phtometric method
WITHDRAWN published on 12.5.1993
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GB/T 14352.16-1993
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Methods for chemical analysis of tungsten ores and molybdenum ores—Determination of selenium content—3,3""-diaminobenzidine photometric method
WITHDRAWN published on 12.5.1993
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GB/T 14352.17-1993
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Methods for chemical analysis of tungsten ores and molybdenum ores—Determination of tellurium content—butyl-Rhodamine B photometric method
WITHDRAWN published on 12.5.1993
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