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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
Workplace air—Determination of Rogor—N-(1-naphthyl)-ethylenediamine-hydrochloride spectrophotometric method
WITHDRAWN published on 23.1.1996
Selected format:Hydrated basic magnesium carbonate for industrial use
WITHDRAWN published on 1.1.1988
Selected format:Workplace air—Determination of dichlorvos—Solvent desorption gas chromatographic method
WITHDRAWN published on 23.1.1996
Selected format:Workplace air—Determination of parathion—Solvent desorption gas chromatographic method
WITHDRAWN published on 23.1.1996
Selected format:Workplace air—Determination of phorate—Solvent desorption gas chromatographic method
WITHDRAWN published on 21.12.1995
Selected format:Workplace air-Determination of methyl iodide-1,2-naphthaquinone-4-sodium sulfonate spectrophotometric method
WITHDRAWN published on 23.1.1996
Selected format:Standard methods for bioassay of daphnia magna straus
WITHDRAWN published on 23.1.1996
Selected format:Barium nitrate for industrial use
WITHDRAWN published on 3.3.1993
Selected format:Standard method for determination of chloroform, trachloromethane in air of residential areas—Gas chromatography
WITHDRAWN published on 23.1.1996
Selected format:Primary screening examination for defects of vertebral column among children and adolescents
WITHDRAWN published on 23.1.1996
Selected format:Latest update: 2025-11-09 (Number of items: 2 243 571)
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