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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 reagent--General method for the determination of ammonium
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent General method for the determination of carbonyl compounds
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent General method for the determination of aluminium
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent General method for the determination of heavy metals
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent--General method for the determination of acidity and alkalinity
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent--General rules for the measurement of readily carbonizable substances
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent General method for the determination of water insoluble matter
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent General method for the determination of iron
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent General method for the determination of dry residue after evaporation
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent General method for the determination of residue after ignition
WITHDRAWN published on 5.9.1988
Selected format:Latest update: 2024-09-03 (Number of items: 2 346 077)
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