BS ISO 5725-4:1994
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Accuracy (trueness and precision) of measurement methods and results Basic methods for the determination of the trueness of a standard measurement method
Hardcopy , PDF
27-03-2020
English
15-04-1995
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1. Scope
2. Normative references
3. Definitions
4. Determination of the bias of a standard measurement
method by an interlaboratory experiment
4.1 The statistical model
4.2 Reference material requirements
4.3 Experimental design considerations when estimating
the bias of a measurement method
4.4 Cross-references to ISO 5725-1 and ISO 5725-2
4.5 Required number of laboratories
4.6 Statistical evaluation
4.7 Interpretation of the results of the statistical
evaluation
5. Determination of the laboratory bias of one
laboratory using a standard measurement method
5.1 Carrying out the experiment
5.2 Cross-references to ISO 5725-1 and ISO 5725-2
5.3 Number of test results
5.4 Choice of reference materials
5.5 Statistical analysis
6. The report to, and the decisions to be taken by,
the panel
6.1 Report by the statistical expert
6.2 Decisions by the panel
7. Utilization of trueness data
Annexes
A. Symbols and abbreviations used in ISO 5725
B. Example of an accuracy experiment
B.1 Description of the experiment
B.2 Precision assessment
B.3 Trueness assessment
B.4 Further analysis
C. Derivation of equations
C.1 Equations (5) and (6) (see 4.5)
C.2 Equations (19) and (20) (see 5.3)
D. Bibliography
Provides basic methods for estimating the bias of a measurement method and the laboratory bias when a measurement method is applied. Coverage includes: determination of the bias of a standard measurement method by an interlaboratory experiment; experimental design considerations; utilisation of trueness data. Also gives definitions and annexes.
| Committee |
SS/6
|
| DevelopmentNote |
Together with BS ISO 5725-1, BS ISO 5725-2, BS ISO 5725-3, BS ISO 5725-5 and BS ISO 5725-6, supersedes BS 5497-1(1987) Supersedes 90/97780 DC (03/2002)
|
| DocumentType |
Standard
|
| Pages |
32
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| ISO 5725-4:1994 | Identical |
| BS 6200-5:1997 | Sampling and analysis of iron, steel and other ferrous metals Guidelines on statistical procedures |
| DD ENV 12142:1997 | Method for determination of stable hydrogen isotope ratio (<sup>2</sup>H/<sup>1</sup>H) of water from fruit juices, using isotope ratio mass spectrometry |
| BS EN 1528-1:1997 | Fatty food. Determination of pesticides and polychlorinated biphenyls (PCBs) General |
| BS EN 1376:1997 | Foodstuffs. Determination of saccharin in table top sweetener preparations. Spectrometric method |
| BS EN 12145:1997 | Fruit and vegetable juices. Determination of total dry matter. Gravimetric method with loss of mass on drying |
| DD ENV 12140:1997 | Method for determination of stable carbon isotope ratio (<sup>13</sup>C/<sup>12</sup>C) of sugars from fruit juices, using isotope ratio mass spectrometry |
| BS EN 12146:1997 | Fruit and vegetable juices. Enzymatic determination of sucrose content. NADP spectrometric method |
| BS EN 12148:1997 | Fruit and vegetable juices. Determination of hesperidin and naringin in citrus juices. Method using high performance liquid chromatography |
| BS 4401-6:1996 | Methods of test for meat and meat products Determination of chloride content (Volhard method) |
| BS 4401-5:1996 | Methods of test for meat and meat products Determination of free fat content |
| BS EN 12147:1997 | Method for determination of titratable acidity of fruit and vegetable juices |
| BS EN 12143:1997 | Fruit and vegetable juices. Estimation of soluble solids content. Refractometric method |
| BS EN 1378:1997 | Foodstuffs. Determination of aspartame in table top sweetener preparations. Method by high performance liquid chromatography |
| BS 4325-12:1996 | Methods for analysis of oilseed residues Determination of glucosinolates content by high-performance liquid chromatography |
| DD ENV 12141:1997 | Method for determination of stable oxygen isotope ratio (<sup>18</sup>O/<sup>16</sup>O) of water from fruit juices, using isotope ratio mass spectrometry |
| BS EN 1379:1997 | Foodstuffs. Determination of cyclamate and saccharin in liquid table top sweetener preparations. Method by high performance liquid chromatography |
| BS EN 1377:1997 | Foodstuffs. Determination of acesulfame K in table top sweetener preparations. Spectrometric method |
| BS EN 12144:1997 | Fruit and vegetable juices. Determination of total alkalinity of ash. Titrimetric method |
| ISO 5725-1:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions |
| ISO 5725-3:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 3: Intermediate measures of the precision of a standard measurement method |
| ISO Guide 33:2015 | Reference materials — Good practice in using reference materials |
| ISO 5725-6:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 6: Use in practice of accuracy values |
| ISO Guide 35:2017 | Reference materials — Guidance for characterization and assessment of homogeneity and stability |
| ISO 3534-2:2006 | Statistics — Vocabulary and symbols — Part 2: Applied statistics |
| ISO 3534-3:2013 | Statistics — Vocabulary and symbols — Part 3: Design of experiments |
| ISO 5725-5:1998 | Accuracy (trueness and precision) of measurement methods and results — Part 5: Alternative methods for the determination of the precision of a standard measurement method |
| ISO 3534-1:2006 | Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability |
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