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A measure for assessing certified reference ores and related materials
1Mineral Sciences Laboratories, Canada Centre for Mineral and Energy Technology, Department of Energy, Mines and Resources, Ottawa, Canada.
Talanta
|August 1, 1975
Summary
A new certification factor objectively evaluates Canadian reference ore quality for analytical use. A factor of 4 is proposed as the threshold for materials to be considered acceptable for certification.
Area of Science:
- Geochemistry
- Analytical Chemistry
- Materials Science
Background:
- Canadian reference ores and related materials are crucial for analytical applications.
- Objective quality assessment is needed to ensure the reliability of these materials.
Purpose of the Study:
- To introduce and define a "certification factor" for evaluating the quality of reference materials.
- To propose a threshold for the certification factor to determine material acceptability.
Main Methods:
- Defining the certification factor as the ratio of the relative confidence interval (percentage) of the interlaboratory consensus value to the mean within-laboratory coefficient of variation.
- Analyzing data from the certification of Canadian reference ores.
Main Results:
- The certification factor provides an objective measure of material quality for specific analytical applications.
- A certification factor of 4 is proposed as the criterion for a material to be deemed acceptable for certification.
Conclusions:
- The proposed certification factor offers a standardized method for assessing the suitability of reference materials.
- Implementing this factor can enhance the consistency and reliability of analytical data derived from reference ores.
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