| Standard No. |
Title |
Price(USD) |
Delivery |
Status |
Add to Cart |
| GB/T 12690.21-2024 |
Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 21：Determination of sulfate radical content in rare earth oxides—Barium sulfate turbidimetry |
$210.00 |
via email in 1~3 business day |
valid,,2025-5-1 |
|
| GB/T 12690.22-1990 |
Rare-earth metals and their oxides--Determination of silicon oxide--Molybdenum blue spectrophotometric method |
$180.00 |
via email in 1~3 business day |
valid,,1992-1-1 |
|
| GB/T 12690.23-1990 |
Rare-earth metals and their oxides--Determination of acid soluble silicon oxide--Molybdenum blue spectrophotometric method |
$180.00 |
via email in 1~3 business day |
abolished2004-06-01,2004-6-1,1992-1-1 |
|
| GB/T 12690.24-1990 |
Rare-earth metals and their oxides--Determination of aluminum content--Aluminum-chromazurol S-hexadecyl-trimethyl ammonium bromide-ethanol spectrophotometric method |
$180.00 |
via email in 1~3 business day |
valid,,1992-1-1 |
|
| GB/T 12690.25-1990 |
Rare-earth metals and their oxides--Determination of magnesium content--Flame atomic absorption spectrometric method |
$184.00 |
via email in 1~3 business day |
abolished2004-06-01,2004-6-1,1992-1-1 |
|
| GB/T 12690.26-1990 |
Rare-earth metals and their oxides--Determination of sodium content--Flame atomic absorption spectrometric method |
$184.00 |
via email in 1~3 business day |
abolished2004-06-01,2004-6-1,1992-1-1 |
|
| GB/T 12690.27-1990 |
Rare-earth metals and their oxides-Determination of ignition loss-Gravimetric method |
$184.00 |
via email in 1~3 business day |
abolished2003-06-01,2003-6-1,1992-1-1 |
|
| GB/T 12690.28-2000 |
Rare earth metals and their oxide--Determination of calcium oxide content--Inductively coupled plasma atomic emission spectrographic method |
$100.00 |
via email in 1~3 business day |
abolished2006-10-01,2006-10-1,2000-1-1 |
|
| GB/T 12690.29-2000 |
Rare earth metals and their oxide - Determination of cerium oxide content - Fluorescent spectrophotometric method |
$90.00 |
via email in 1~3 business day |
valid,,2000-1-1 |
|
| GB/T 12690.3-1990 |
Cerium and cerium oxide--Determination of lanthanum oxide, praseodymium oxide, neodymium oxide, samarium oxide and yttrium oxide contents--Emission spectrographic method |
$180.00 |
via email in 1~3 business day |
valid,,1992-1-1 |
|
| GB/T 12690.3-2002 |
Chemical analysis methods for non-RE impurity of rare earth metals and their oxides-Determination of water content of rare earth oxides-Gravimetric method |
$120.00 |
via email in 1~3 business day |
superseded,2016-4-1,2003-6-1 |
|
| GB/T 12690.3-2015 |
Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides―Part 3:Determination of water content of rare earth oxides―Gravimetric method |
$60.00 |
via email in 1~2 business day |
valid,,2016-4-1 |
|
| GB/T 12690.4-1990 |
Cerium oxide--Determination of lanthanum oxide, praseodymium oxide, neodymium oxide, samarium oxide and yttrium oxide contents--Spectrochemical method |
$180.00 |
via email in 1~3 business day |
valid,,1992-1-1 |
|
| GB/T 12690.4-2003 |
Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides-Deter |
$140.00 |
via email in 1~3 business day |
superseded,2022-5-1,2004-6-1 |
|
| GB/T 12690.4-2021 |
Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 4: Determination of oxygen and nitrogen contents—Impulse-infrared absorption and impulse-thermal conductivity method |
$120.00 |
via email in 1~3 business day |
valid,,2022-5-1 |
|
| GB/T 12690.5-1990 |
Praseodymium oxide--Determination of lanthanum oxide, cerium oxide, neodymium oxide, samarium oxide and yttrium oxide contents--X ray fluorescence spectrometric method |
$180.00 |
via email in 1~3 business day |
valid,,1992-1-1 |
|
| GB/T 12690.5-2003 |
Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides Determination of Al、Cr、Mn、Fe、Co、Ni、Cu、Zn、Pb content by inductively coupled plasma atomic emission spectrographic method Determination of Co、Mn、Pb、Ni |
$210.00 |
via email in 1~3 business day |
superseded,2018-2-1,2004-6-1 |
|
| GB/T 12690.5-2017 |
Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides - Part 5: Determination of cobalt, manganese, lead, nickel, copper, zinc, aluminum, chromium, magnesium, cadmium, vanadium and iron contents |
$168.00 |
via email in 1~3 business day |
valid,,2018-2-1 |
|
| GB/T 12690.6-1990 |
Praseodymium oxide--Determination of lanthanum oxide, cerium oxide, neodymium oxide, samarium oxide and yttrium oxide contents--Emission spectrographic method |
$180.00 |
via email in 1~3 business day |
valid,,1992-1-1 |
|
| GB/T 12690.6-2003 |
Praseodymium oxide-Determination of lanthanum oxide, cerium oxide, neodymium oxide, samarium oxide |
$214.00 |
via email in 1~3 business day |
superseded,2018-5-1,2004-6-1 |
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