Cookies
We need your consent to use the individual data so that you can see information about your interests, among other things. Click "OK" to give your consent.
Standards GB - Chinese national standards - Page 5747
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
Price display: excl. VAT
Displayed currency:
USD
Sort by:
GB/T 12690.21-1990
WITHDRAWN
Show all technical information.
Rare-earth metals and their oxides--Determination of phosphorus content--Molybdenum blue spectrophotometric method
WITHDRAWN published on 1.1.1990
Selected format:Show all technical information.
GB/T 12690.22-1990
WITHDRAWN
Show all technical information.
Rare-earth metals and their oxides--Determination of silicon oxide--Molybdenum blue spectrophotometric method
WITHDRAWN published on 1.1.1990
Selected format:Show all technical information.
GB/T 12690.23-1990
WITHDRAWN
Show all technical information.
Rare-earth metals and their oxides--Determination of acid soluble silicon oxide--Molybdenum blue spectrophotometric method
WITHDRAWN published on 1.1.1990
Selected format:Show all technical information.
GB/T 12690.24-1990
WITHDRAWN
Show all technical information.
Rare-earth metals and their oxides--Determination of aluminum content--Aluminum-chromazurol S-hexadecyl-trimethyl ammonium bromide-ethanol spectrophotometric method
WITHDRAWN published on 1.1.1990
Selected format:Show all technical information.
GB/T 12690.25-1990
WITHDRAWN
Show all technical information.
Rare-earth metals and their oxides--Determination of magnesium content--Flame atomic absorption spectrometric method
WITHDRAWN published on 1.1.1990
Selected format:Show all technical information.
GB/T 12690.26-1990
WITHDRAWN
Show all technical information.
Rare-earth metals and their oxides--Determination of sodium content--Flame atomic absorption spectrometric method
WITHDRAWN published on 1.1.1990
Selected format:Show all technical information.
GB/T 12690.27-1990
WITHDRAWN
Show all technical information.
Rare-earth metals and their oxides--Determination of ignition loss--Gravimetric method
WITHDRAWN published on 1.1.1990
Selected format:Show all technical information.
GB/T 12690.28-2000
WITHDRAWN
Show all technical information.
Rare earth metals and their oxide—Determination of calcium oxide content—Inductively coupled plasma atomic emission spectrographic method
WITHDRAWN published on 5.6.2000
Selected format:Show all technical information.
GB/T 12690.3-1990
WITHDRAWN
Show all technical information.
Cerium and cerium oxide--Determination of lanthanum oxide, praseodymium oxide, neodymium oxide, samarium oxide and yttrium oxide contents--Emission spectrographic method
WITHDRAWN published on 1.1.1990
Selected format:Show all technical information.
GB/T 12690.3-2002
WITHDRAWN
Show all technical information.
Chemical analysis methods for non-RE impurity of rare earth metals and their oxides—Determination of water content of rare earth oxides—Gravimetric method
WITHDRAWN published on 19.11.2002
Selected format:Show all technical information.
Can we help you with something?
