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Standards GB - Chinese national standards - Page 6310
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 16018-1995
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Workplace air—Determination of manganese and its compounds Flame atomic absorption spectrophotometric method
WITHDRAWN published on 23.1.1996
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GB/T 16019-1995
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Workplace air—Determination of chromium trioxide, chromates and dichromates—Diphenylcarbazide spectrophotometric method
WITHDRAWN published on 23.1.1996
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GB/T 16020-1995
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Workplace air—Determination of chromium trioxide—Flame atomic absorption spectrophotometric method
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GB/T 16021-1995
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Workplace air—Determination of nickel and its compounds—Flame atomic absorption spectrophotometric method
WITHDRAWN published on 21.12.1995
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GB/T 16022-1995
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Workplace air—Determination of cobalt and its compounds—Flame atomic absorption spectrophotometric method
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GB/T 16023-1995
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Workplace air—Determination of beryllium—Morin fluorescent spectrophotometric method
WITHDRAWN published on 23.1.1996
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GB/T 16024-1995
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Workplace air—Determination of ozone—Eugenol-pararosaniline hydrochloride spectrophotometric method
WITHDRAWN published on 23.1.1996
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GB/T 16025-1995
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Workplace air—Determination of sulfur dioxide—Pararosaniline hydrochloride spectrophotometric method
WITHDRAWN published on 23.1.1996
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GB/T 16026-1995
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Workplace air—Determination of sulfuric acid and sulfur trioxide—Barium chloride turbidimetric method
WITHDRAWN published on 23.1.1996
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GB/T 16027-1995
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Workplace air—Determination of hydrogen sulfide—Colorimetric method
WITHDRAWN published on 23.1.1996
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