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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
Chemical reagentGeneral rules for the gas chromatography
WITHDRAWN published on 23.1.2006
Selected format:Chemical reagent--General rules for flame atomic absorption spectrometry
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent--General rules for the determination of pH
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent General rules for potentiometric titration
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent General rules for the determination of permanganate-reducing substances
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent--General method for the determination of phosphate
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent General method for the determination of sulphate
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent General method for the determination of chloride
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent--General method for the determination of oxalates
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent General method for the determination of sulphur compounds
WITHDRAWN published on 5.9.1988
Selected format:Latest update: 2024-09-03 (Number of items: 2 346 077)
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