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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
The measurement of whiteness for industrial sodium tripolyphosphate
WITHDRAWN published on 15.3.2004
Selected format:Sodium tripolyphosphate for industrial use (including foodstuffs)--Determination of oxides of nitrogen content--3,4-Xylenol spectrophotometric method
WITHDRAWN published on 10.12.1988
Selected format:Sodium tripolyphosphate for industrial use (including foodstuffs)—Determination of oxides of nitrogen content-3,4-Xylenol spectrophotometric method
WITHDRAWN published on 15.3.2004
Selected format:Sodium tripolyphosphate for industrial use--Determination of I type content
WITHDRAWN published on 10.12.1988
Selected format:Sodium tripolyphosphate for industrial use-Determination of I type content
WITHDRAWN published on 5.3.2004
Selected format:Sodium tripolyphosphats for industrial use--Determination of total phosphorus pentoxide content--Quinoline phosphomolybdate gravimetric method
WITHDRAWN published on 10.12.1988
Selected format:Sodium tripolyphosphate for industrial use-Determination of total phosphorus(v)oxide content-Quinoline phosphomolybdate gravimetric method
WITHDRAWN published on 15.3.2004
Selected format:Sodium tripolyphosphate for industrial use--Separation by ion exchange chromatography and determination of the different phosphate forms
WITHDRAWN published on 10.12.1988
Selected format:Sodium tripolyphosphate for industrial use—Separation by ion exchange chromatography and determination of the different phosphate forms
WITHDRAWN published on 15.3.2004
Selected format:Sodium tripolyphosphate for industrial use--Determination of insoluble matter in water
WITHDRAWN published on 10.12.1988
Selected format:Latest update: 2024-08-30 (Number of items: 2 345 304)
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