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ISO 8541:1986 Manganese and chromium ores -- Experimental methods for checking the bias of sampling and sample preparation
standard by International Organization for Standardization, 10/01/1986
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The checking applies to manganese and chromium ores, whether natural or processed, being carried out in accordance with the methods specified in the relevant International Standards. Includes general conditions for sampling and preparation of samples and experiments for bias of sampling and of sample preparation, gives a data analysis and reviews results.