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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
Standard examination methods for drinking water—Part 1:General principles
Standard published on 17.3.2023
Selected format:Standard examination methods for drinking water—Part 10: Disinfection by-products indices
Standard published on 17.3.2023
Selected format:Standard examination methods for drinking water—Part 11: Disinfectants indices
Standard published on 17.3.2023
Selected format:Standard examination methods for drinking water—Part 12: Microbiological indices
Standard published on 17.3.2023
Selected format:Standard examination methods for drinking water—Part 13: Radiological indices
Standard published on 17.3.2023
Selected format:Standard examination methods for drinking water—Part 2Collection and preservation of water samples
Standard published on 17.3.2023
Selected format:Standard examination methods for drinking water—Part 3: Water analysis quality control
Standard published on 17.3.2023
Selected format:Standard examination methods for drinking water—Part 4Organoleptic and physical indices
Standard published on 17.3.2023
Selected format:Standard examination methods for drinking water—Part 5Inorganic nonmetallic indices
Standard published on 17.3.2023
Selected format:Standard examination methods for drinking water—Part 6Metal and metalloid indices
Standard published on 17.3.2023
Selected format:Latest update: 2026-06-25 (Number of items: 2 284 379)
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