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PD CEN/TR 10345:2013 Guideline for statistical data treatment of inter laboratory tests for validation of analytical methods >
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PD CEN/TR 10345:2013 Guideline for statistical data treatment of inter laboratory tests for validation of analytical methods, 2013
- Contents Page
- Foreword
- 1 Scope
- 2 Normative references
- 3 Principle
- 4 Preliminary rules [Go to Page]
- 5 Procedure [Go to Page]
- 6 Report
- 7 General remarks
- Annex A (normative) Steps for the validation of a draft Standard
- A.1 Decision from a TC to create a working group
- Figure A.1 — Example of selection of P samples
- A.2 Laboratories performance on the specified tests
- A.3 Statistical work to be done at each level (for each of the P samples)
- A.3.1 General
- A.3.2 Intra laboratory repeatability variance (Cochran's test: ISO 5725-2:1994, 7.3.3)
- A.3.3 Intra laboratory reproducibility variance (Grubbs' test: ISO 5725-2:1994, 7.3.4)
- A.3.4 Inter laboratories reproducibility variance (Grubbs' test: ISO 5725-2:1994, 7.3.4)
- A.3.5 Inter level laboratory performance
- Annex B (normative) Synoptic of the operations described in Annex A
- Annex C (informative) Examples
- C.1 Nickel alloys – Determination of tantalum content – Inductively coupled plasma emission spectrometric method – ISO 22725
- C.1.1 Original data
- C.1.2 Cochran test
- C.1.3 New table containing the set of laboratories having the same intra laboratory repeatability variance for further tests
- C.1.4 Grubbs test, for intra laboratory reproducibility variance
- C.1.5 New table containing the set of laboratories having the same intra laboratory reproducibility variance for further tests
- C.1.6 Grubbs test, for inter laboratory reproducibility variance
- C.1.7 New table containing the set of laboratories having the same inter laboratory reproducibility variance for further evaluations
- C.2 Steel and iron – Determination of Nitrogen content –Thermal conductimetric method after fusion in a current of inert gas – ISO 10720
- C.2.1 Original data
- C.2.2 Cochran test
- C.2.3 New table containing the set of laboratories having the same intra laboratory repeatability variance for further tests
- C.2.4 Grubbs test, for intra laboratory reproducibility variance
- C.2.5 New table containing the set of laboratories having the same intra laboratory reproducibility variance for further tests
- C.2.6 Grubbs test, for inter laboratory reproducibility variance
- C.2.7 New table containing the set of laboratories having the same inter laboratory reproducibility variance for further evaluations
- C.3 Steel and iron – Determination of chromium content – Indirect titration method – ISO 15355
- C.3.1 Original data
- C.3.2 Cochran test
- C.3.3 New table containing the set of laboratories having the same intra laboratory repeatability variance for further tests
- C.3.4 Grubbs test, for intra laboratory reproducibility variance
- C.3.5 New table containing the set of laboratories having the same intra laboratory reproducibility variance for further tests
- C.3.6 Grubbs test, for inter laboratory reproducibility variance
- C.3.7 New table containing the set of laboratories having the same inter laboratory reproducibility variance for further evaluations
- C.4 Steel and iron – Determination of Nitrogen content –Thermal conductimetric method after fusion in a current of inert gas – ISO 10720
- C.4.1 Original data
- C.4.2 Cochran test
- C.4.3 New table containing the set of laboratories having the same intra laboratory repeatability variance for further tests
- C.4.4 Grubbs test, for intra laboratory reproducibility variance
- C.4.5 New table containing the set of laboratories having the same intra laboratory reproducibility variance for further tests
- C.4.6 Grubbs test, for inter laboratory reproducibility variance
- C.4.7 New table containing the set of laboratories having the same inter laboratory reproducibility variance for further evaluations
- C.5 General remarks about the examples shown
- Bibliography [Go to Page]