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Standards GB - Chinese national standards - Page 145
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 11889-1989
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Water quality--Determination of aniline compounds--Spectrophotometric method with N-(1-naphthyl) ethy lenediamine
Standard published on 3.11.1989
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GB/T 11891-1989
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Water quality--Determination of Kjeldahl nitrogen
Standard published on 3.11.1989
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GB/T 11892-1989
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Water quality--Determination of permanganate index
Standard published on 3.11.1989
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GB/T 11893-1989
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Water quality--Determination of total phosphorus--Ammonium molybdate spectrophotometric method
Standard published on 3.11.1989
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GB/T 11895-1989
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Water quality--Determination of benzo(a)-pyrene--Acetylated paper chromatography with fluorescence spectrophotometric method
Standard published on 3.11.1989
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GB/T 11896-1989
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Water quality--Determination of chloride--Silver nitrate titration method
Standard published on 3.11.1989
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GB/T 11899-1989
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Water quality--Determination of sulfate--Gravimetric method
Standard published on 3.11.1989
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GB/Z 119-2026
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C-Si photovoltaic(PV) modules—Light and elevated temperature induced degradation (LETID) test—Detection
Standard published on 4.1.2026
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GB/T 119.1-2000
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Parallel pinsof unhardened steel and austenitic stainless steel
Standard published on 26.9.2000
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GB/T 119.2-2000
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Parallel pinsof hardened steel and martensitic stainless steel(Dowel pins)
Standard published on 26.9.2000
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