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Standards GB - Chinese national standards - Page 4981
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
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GB/T 5549-2010
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Surface active agents - Determination of surface tension by drawing up liquid films
Standard published on 14.1.2011
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GB/T 5550-2016
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Surface active agents—Determination of dispersing power
Standard published on 13.10.2016
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GB/T 5551-2010
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Surface active agents - Determination for total calcium ion and magnesium ion contents in dispersing agents
Standard published on 14.1.2011
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GB/T 5553-2007
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Surface active agents - Determination of water repellency of waterprooting agents
Standard published on 13.8.2007
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GB/T 5555-2003
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Surface active agents--Test method for acid stability
Standard published on 3.7.2003
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GB/T 5556-2003
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Surface active agents--Test method for alkaline stability
Standard published on 3.7.2003
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GB/T 5558-2015
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Surface active agents—Evaluation of wetting agents for mercerization
Standard published on 9.10.2015
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GB/T 5559-2010
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Non-ionic surface active agents obtained from ethylene oxide and ethylene oxide/propylene oxide block copolymers - Determination of cloud point
Standard published on 14.1.2011
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GB/T 5560-2003
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Nonionic surface active agents--Determination of polyethylene glycols and non-ionic active matter(adducts)--Weilbull method
Standard published on 3.7.2003
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GB/T 5561-2012
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Surface active agents - Determination of viscosity and flow properties using a rotational viscometer
Standard published on 31.12.2012
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