Alumina international standards and national standards
There are lessons at home, the state-regulated country, no matter what the industry will eventually have to face a full-fledged trend, however, must inevitably be reflected in the development of certain standards, otherwise you by your standards, according to my standards I, as sure Consumers will not, of course, aluminum is no exception, every country must also have their own standards, and a final international standards, we take a look at the following alumina international standards and national standards for the details of the :
The national standard is commonly used traditional methods of chemical analysis to analyze the composition of the grade alumina, cumbersome methods, according to the analysis of the cycle, in strict accordance with the standards GB/T15000.1-15000.5-1994 and YS/T409-1998, after sampling, Kind of mixed, set the value of homogeneity test, test normal distribution, stability of the research, production and use of analysis of the complex process of evaluation and so on, through the identification of the evaluation committee unanimously, the composition of the sample design is reasonable, in line with the YZ/T272-1998 "alumina" products Standard chemical composition requirements in order to balance the country qualified products.
International standards commonly used X-ray fluorescence spectrometry, the standard sample to be used in the preparation of high purity oxides, the preparation is a complicated one, for more analysis of the composition of alumina samples were in strict accordance with the International Organization for Standardization (ISO), JB/T4281-1999 And the standard ISO5182-1999 (E) international standards, after a system like that kind of mixed, set the value of homogeneity test, test normal distribution, stability of the research, production and use of analysis of the complex process of assessment, in line with the X-ray fluorescence spectrometry Standards; uniformity and stability, set the value of accurate and reliable. Especially in the samples based on synthesized in the process of alumina a larger surface area, with the actual performance of absorption and use of the alumina assay in order to achieve international standards.
We believe that after reading some of the alumina will have a better knowledge of understanding of the step, if you have any good ideas and suggestions directly below to comment.
