This International Standard describes recommended procedures for the use of CRMs that have been prepared and certified in accordance with ISO 11459. Such CRMs are used by laboratories to carry out the trueness tests as specified in the various International Standards for the chemical analysis of iron ores, to verify the analysis of shipment samples and the ongoing reliability of analytical results.
GSO ISO 16042:2013 history
2013GSO ISO 16042:2013 Iron ores -- Guidelines for the use of certified reference materials (CRMs)