PD CEN/TR 10350:2013
Current
The latest, up-to-date edition.
Analysis of steels and irons. Internal laboratory procedure for checking the accuracy of an analytical method by using Certified Reference Materials
Hardcopy , PDF
English
31-03-2013
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Foreword
Introduction
1 Scope
2 Principle
3 Terms and definitions
4 Procedure
5 Evaluation of precision
6 Assessment of the trueness
7 Conclusion
Annex A (informative) - Symbols used
Annex B (informative) - Table of the chi[2] distribution
Annex C (informative) - Examples
Bibliography
Defines how to check results for absence of bias by comparison of these analytical results with those obtained during the certification of CRMs.
| Committee |
ISE/1
|
| DocumentType |
Standard
|
| Pages |
28
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
The present statistical procedure describes how to check results for absence of bias by comparison of these analytical results with those obtained during the certification of CRMs.
If the resulting data confirm the absence of bias, the method may be considered accurate when applied to all steels and irons whose composition ranges are adequately covered or bounded by the CRMs used.
The resulting data give also an estimate of the repeatability and/or the intermediate precision (\'intralaboratory reproducibility\') for the CRMs used. The comparison of these analytical data with the repeatability data obtained during the certification may also be performed depending on the strict purpose of the method under consideration.
For the purpose of this Technical Report, the use of existing CRMs is essential for the assessment of the trueness, but it may be only indicative for the other statistical data.
NOTE This Technical Report does not describe the use of CRMs as calibrants, this subject being treated in ISO Guide 32.
| Standards | Relationship |
| CEN/TR 10350:2013 | Identical |
| ISO Guide 33:2015 | Reference materials — Good practice in using reference materials |
| CEN/TR 10317:2014 | European certified reference materials (EURONORM-CRMs) for the determination of the chemical composition of iron and steel products prepared under the auspices of the European Committee for Iron and Steel Standardization (ECISS) |
| ISO 3534-2:2006 | Statistics — Vocabulary and symbols — Part 2: Applied statistics |
| ISO Guide 30:2015 | Reference materials — Selected terms and definitions |
| ISO 5725-2:1994 | Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method |
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