Yttrium oxide and europium oxide of phosphor grade—Determination of total rare earth oxide content—EDTA volumetric method

WITHDRAWN published on 25.2.1988

Yttrium oxide and europium oxide of phosphor grade—Determination of calcium oxide content—N2O-C2H2 flame atomic absorption spectrophotometric method

WITHDRAWN published on 25.2.1988

Yttrium oxide of phosphor grade--Determination of acid soluble silicon dioxide--Molybdenum blue photometric method

WITHDRAWN published on 25.2.1988

Yttrium oxide of phosphor grade--Determination of iron oxide, lead oxide, nickel oxide and copper oxide contents--Emission spectrographic method

WITHDRAWN published on 25.2.1988

Yttrium oxide of phosphor grade—Determination of trace rare earth oxide contents—Spectrochemical method and direct spectrographic method

WITHDRAWN published on 25.2.1988

Europium oxide of phosphor grade--Determination of lead oxide, nickel oxide, iron oxide and copper oxide contents--Emission spectrographic method

WITHDRAWN published on 25.2.1988

Europium oxide of phosphor grade—Determination of cerium oxide, praseodymium oxide, samarium oxide, gadolinium oxide and dysprosium oxide contents—Spectrochemical method and direct spectrographic method

WITHDRAWN published on 25.2.1988

Europium oxide—Determination of lanthanum oxide,cerium oxide,praseodymium oxide,neodymium oxide,samarium oxide,gadolinium oxide,terbium oxide,dysprosium oxide,holmium oxide,erbium oxide,thulium oxide,ytterbium oxide,lutetium oxide and yttrium oxide cont

WITHDRAWN published on 5.6.2000

Test methods of gas absorption characteristic for non-evaporation gettering materials and products

WITHDRAWN published on 25.2.1988

Lithium carbonate for production of red luminescent material

WITHDRAWN published on 1.1.1988