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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
Test method of precious metal alloys - Determination of platinum content for gold, platinum and palladium alloys - Electricity titration using potassium permanganate
WITHDRAWN published on 31.3.2008
Selected format:Method for chemical analysis of precious metals and their alloys—Palladium, silver alloys—Determination of palladium content
WITHDRAWN published on 11.5.1994
Selected format:Test method of precious metal alloys - Determination of palladium content for palladium and silver alloys - Butanedione dioxime gravimetry
WITHDRAWN published on 31.3.2008
Selected format:Method for chemical analysis of precious metals and their alloys—Gold, Palladium alloys—Determination of silver content
WITHDRAWN published on 11.5.1994
Selected format:Test method of precious metal alloys Determination of silver content for gold and palladium alloys Potentionmeter titration with potassium iodide
WITHDRAWN published on 31.3.2008
Selected format:Method for chemical analysis of precious metals and their alloys—Platinum, palladium alloys—Determination of iridium content
WITHDRAWN published on 11.5.1994
Selected format:Test method of precious metal alloys - Determination of iridium contents for platinum, palladium alloys - Electricity titration with ferrous sulfate
WITHDRAWN published on 31.3.2008
Selected format:Method for chemical analysis of precious metals and their alloys—Gold alloys—Determination of chromium content
WITHDRAWN published on 11.5.1994
Selected format:Method for chemical analysis of precious metals and their alloys—Gold,palladium and silver alloys—Determination of copper content
WITHDRAWN published on 11.5.1994
Selected format:Method for chemical analysis of precious metals and their alloys—Gold alloys—Determination of indium content
WITHDRAWN published on 11.5.1994
Selected format:Latest update: 2026-04-01 (Number of items: 2 270 267)
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