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Standard sample information
ISO16042:2007-Guidelines for the use of certified reference materials
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发布时间：2019/08/06
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16042 was prepared by Technical Committee ISO/TC 102, Iron ore and direct reduced iron, Subcommittee SC 2, Chemical analysis.
Introduction
This International Standard is intended for use in conjunction with other International Standards for the chemical analysis of iron ores. It describes recommended procedures for the use of iron ore certified reference materials (CRMs) in verifying the trueness of chemical analysis. It is recommended that CRMs also be used for general quality assurance purposes in laboratories where the analysis of iron ores is carried out regularly.
It is also recommended that CRMs be, from time to time, introduced as unknowns in laboratory proficiency testing schedules.
1 Scope
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.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3082, Iron ores — Sampling and sample preparation procedures
ISO 8258:1991, Shewhart control charts
ISO 11459, Iron ores — Certified reference materials — Preparation and certification for use in chemical analysis
ISO 11323, Iron ore and direct reduced iron — Vocabulary
ISO Guide 30, Terms and definitions used in connection with reference materials
ISO Guide 33, Uses of certified reference materials
ISO Guide 35, Reference materials — General and statistical principles for certification
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11323 and ISO Guide 30 apply.
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16042 was prepared by Technical Committee ISO/TC 102, Iron ore and direct reduced iron, Subcommittee SC 2, Chemical analysis.
Introduction
This International Standard is intended for use in conjunction with other International Standards for the chemical analysis of iron ores. It describes recommended procedures for the use of iron ore certified reference materials (CRMs) in verifying the trueness of chemical analysis. It is recommended that CRMs also be used for general quality assurance purposes in laboratories where the analysis of iron ores is carried out regularly.
It is also recommended that CRMs be, from time to time, introduced as unknowns in laboratory proficiency testing schedules.
1 Scope
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.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3082, Iron ores — Sampling and sample preparation procedures
ISO 8258:1991, Shewhart control charts
ISO 11459, Iron ores — Certified reference materials — Preparation and certification for use in chemical analysis
ISO 11323, Iron ore and direct reduced iron — Vocabulary
ISO Guide 30, Terms and definitions used in connection with reference materials
ISO Guide 33, Uses of certified reference materials
ISO Guide 35, Reference materials — General and statistical principles for certification
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11323 and ISO Guide 30 apply.
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