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BS ISO 5725-4:1994

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Accuracy (trueness and precision) of measurement methods and results Basic methods for the determination of the trueness of a standard measurement method
Available format(s)

Hardcopy , PDF

Superseded date

03-27-2020

Language(s)

English

Published date

04-15-1995

Publisher

British Standards Institution

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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