Normy GB - Čínské národní normy - strana 5990

Praseodymium oxide--Determination of lanthanum oxide, cerium oxide, neodymium oxide, samarium oxide and yttrium oxide contents--Emission spectrographic method

NEPLATNÁ vydaná dňa 1.1.1990

Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Determination of iron content—Kalium thiocyanate,1,10-phenanthroline spectrophotometric method

NEPLATNÁ vydaná dňa 18.11.2003

Neodymium and neodymium oxide--Determination of lanthanum oxide, cerium oxide, praseodymium oxide, samarium oxide, yttrium oxide contents--X-ray fluorescence spectrometric method

NEPLATNÁ vydaná dňa 1.1.1990

Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides Determination of silicon content Molybdenum blue spectrophotometric method

NEPLATNÁ vydaná dňa 18.11.2003

Neodymium and neodymium oxide--Determination of lanthanum oxide, cerium oxide, praseodymium oxide, samarium oxide and yttrium oxide contents--Emission spectrographic method

NEPLATNÁ vydaná dňa 1.1.1990

Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Determination of sodium content—Flame atomic absorption spectrometric method

NEPLATNÁ vydaná dňa 18.11.2003

Neodymium oxide--Determination of lanthanum oxide, cerium oxide, praseodymium oxide, samarium oxide and yttrium oxide contents--Spectrochemical method

NEPLATNÁ vydaná dňa 1.1.1990

Air compressor oils

NEPLATNÁ vydaná dňa 30.12.1990

Petroleum products—Fuels (class F)—Classification—Part 1:General

NEPLATNÁ vydaná dňa 30.12.1990

Petroleum products—Fuels (class F)—Classification—Part 2:Categories of marine fuels

NEPLATNÁ vydaná dňa 30.12.1990