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Standards GB - Chinese national standards - Page 5259
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 8570.3-2010
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Determination of liquefied anhydrous ammonia - Part 3: Residue content - Gravimetric method
Standard published on 26.9.2010
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GB/T 8570.4-2010
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Determination of liquefied anhydrous ammonia - Part 4: Residue content - Titrimetric method
Standard published on 26.9.2010
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GB/T 8570.5-2010
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Determination of liquefied anhydrous ammonia - Part 5: Water content Karl Fishcer method
Standard published on 26.9.2010
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GB/T 8570.6-2010
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Determination of liquefied anhydrous ammonia - Part 6: Oil content - Gravimetric and infra-red methods
Standard published on 26.9.2010
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GB/T 8570.7-2010
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Determination of liquefied anhydrous ammonia - Part 7: Iron content - o-Phenathroline spectrophotometric method
Standard published on 26.9.2010
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GB/T 8571-2008
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Preparation of laboratory samples for compound fertilizers
Standard published on 17.6.2008
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GB/T 8572-2010
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Determination of total nitrogen content for compound fertilizers titrimetric method after distillation
Standard published on 26.9.2010
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GB/T 8573-2017
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Determination of available phosphorus content for compound fertilizers
Standard published on 29.12.2017
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GB/T 8574-2024
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Determination of potassium content for compound fertilizers
Standard published on 29.9.2024
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GB/T 8576-2010
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Determination of free water for compound fertilizers - Vacuum oven method
Standard published on 26.9.2010
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