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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
Sodium tripolyphosphate for industrial use—Determination of matter insoluble in water
WITHDRAWN published on 15.3.2004
Selected format:Sodium tripolyphosphate and sodium pyrophosphate for industrial use--Determination of loss ignition
WITHDRAWN published on 10.12.1988
Selected format:Sodium tripolyphosphate and sodium pyrophosphate for industrial use—Determination of loss on ignition
WITHDRAWN published on 15.3.2004
Selected format:Determination of iron content in industrial sodium tripolyphosphate--2,2""-Bipyridyl spectrophotometric method
WITHDRAWN published on 10.12.1988
Selected format:Sodium tripolyphosphate for industrial use—-Determination of iron content—-2,2""-bipyridyl spectrophotometric method
WITHDRAWN published on 15.3.2004
Selected format:Sodium tripolyphosphate for industrial use--Measurement of pH--Potentiometric method
WITHDRAWN published on 10.12.1988
Selected format:Sodium tripolyphosphate for industrial use-Measurement of pH-Potentiometric method
WITHDRAWN published on 15.3.2004
Selected format:Determination of particle size for industrial sodium tripolyphosphate
WITHDRAWN published on 10.12.1988
Selected format:Sodium tripolyphosphate for industrial use-Determination of particle size
WITHDRAWN published on 15.3.2004
Selected format:Industrial sodium tripolyphosphate--Determination of apparent density--Method by measuring the mass of a given volume
WITHDRAWN published on 1.12.1988
Selected format:Latest update: 2024-08-30 (Number of items: 2 345 304)
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