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  • BS ISO 5725-2:1994

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 repeatability and reproducibility of a standard measurement method

    Available format(s):  Hardcopy, PDF

    Superseded date:  27-01-2020

    Language(s):  English

    Published date:  12-11-2002

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    1 Scope
    2 Normative references
    3 Definitions
    4 Estimates of the parameters in the basic model
    5 Requirements for a precision experiment
       5.1 Layout of the experiment
       5.2 Recruitment of the laboratories
       5.3 Preparation of the materials
    6 Personnel involved in a precision experiment
       6.1 Panel
       6.2 Statistical functions
       6.3 Executive functions
       6.4 Supervisors
       6.5 Operators
    7 Statistical analysis of a precision experiment
       7.1 Preliminary considerations
       7.2 Tabulation of the results and notation used
       7.3 Scrutiny of results for consistency and outliers
       7.4 Calculation of the general mean and variances
       7.5 Establishing a functional relationship between
            precision values and the mean level m
       7.6 Statistical analysis as a step-by-step procedure
       7.7 The report to, and the decisions to be taken by,
            the panel
    8 Statistical tables
    Annex A (normative) Symbols and abbreviations used in ISO 5725
    Annex B (informative) Examples of the statistical analysis of
            precision experiments
       B.1 Example 1: Determination of the sulfur content of
            coal (Several levels with no missing or outlying data)
       B.2 Example 2: Softening point of pitch (Several levels
            with missing data)
       B.3 Example 3: Thermometric titration of creosote oil
            (Several levels with outlying data)
    Annex C (informative) Bibliography
    Figures

    Abstract - (Show below) - (Hide below)

    Gives a detailed practical description of the basic method for routine use in estimating the precision of measurement methods. Concerned exclusively with measurement methods which yield measurements on a continuous scale and give a single value as the test result. Coverage includes: statistical functions, executive functions, supervisors, operators, and layout of the experiment.

    General Product Information - (Show below) - (Hide below)

    Committee SS/6
    Development Note Together with BS ISO 5725-1, BS ISO 5725-3, BS ISO 5725-4, BS ISO 5725-5 and BS ISO 5725-6, supersedes BS 5497-1(1987) Supersedes 90/97779 DC (03/2002)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 6002-3(2005) : 2005 SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 3: GUIDE TO DOUBLE SAMPLING SCHEMES INDEXED BY ACCEPTANCE QUALITY LIMIT (AQL) FOR LOT-BY-LOT INSPECTION
    BS 4401-6(1996) : 1996 METHODS OF TEST FOR MEAT AND MEAT PRODUCTS - PART 6: DETERMINATION OF CHLORIDE CONTENT (VOLHARD METHOD)
    BS 903-2(1997) : 1997 PHYSICAL TESTING OF RUBBER - GUIDE TO THE APPLICATION OF STATISTICS TO RUBBER TESTING
    BS 6200-5(1997) : 1997 SAMPLING AND ANALYSIS OF IRON, STEEL AND OTHER FERROUS METALS - GUIDELINES ON STATISTICAL PROCEDURES
    BS 1881-119(2011) : 2011 TESTING CONCRETE - PART 119: METHOD FOR DETERMINATION OF COMPRESSIVE STRENGTH USING PORTIONS OF BEAMS BROKEN IN FLEXURE (EQUIVALENT CUBE METHOD)
    DD ENV 12140 : 1997 METHOD FOR DETERMINATION OF STABLE CARBON ISOTOPE RATIO ([13]C/[12]C) OF SUGARS FROM FRUIT JUICES, USING ISOTOPE RATIO MASS SPECTROMETRY
    DD ENV 12142 : 1997 METHOD FOR DETERMINATION OF STABLE HYDROGEN ISOTOPE RATIO ([2]H/[1]H) OF WATER FROM FRUIT JUICES, USING ISOTOPE RATIO MASS SPECTROMETRY
    BS 6002-2(2007) : 2007 SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 2: GENERAL GUIDE TO SINGLE SAMPLING PLANS INDEXED BY ACCEPTANCE QUALITY LIMIT (AQL) FOR LOT-BY-LOT INSPECTION OF INDEPENDENT QUALITY CHARACTERISTICS
    11/30242744 DC : 0 BS 1881-122:2011 - TESTING CONCRETE - PART 122: METHOD FOR DETERMINATION OF WATER ABSORPTION
    BS 6068-5.1(1996) : 1996 WATER QUALITY - DETERMINATION OF THE INHIBITION OF THE MOBILITY OF DAPHNIA MAGNA STRAUS (CLADOCERA, CRUSTACEA) - ACUTE TOXICITY TEST
    BS 6002-1(2007) : 2007 SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 1: GUIDE TO SINGLE SAMPLING PLANS INDEXED BY ACCEPTANCE QUALITY LIMIT (AQL) FOR LOT-BY-LOT INSPECTION FOR A SINGLE QUALITY CHARACTERISTIC AND A SINGLE AQL
    BS 1881-124:2015 TESTING CONCRETE - PART 124: METHODS FOR ANALYSIS OF HARDENED CONCRETE
    BS 4401-5(1996) : 1996 METHODS OF TEST FOR MEAT AND MEAT PRODUCTS - DETERMINATION OF FREE FAT CONTENT
    11/30246289 DC : 0 BS 1881-119:2011 - TESTING CONCRETE - METHOD FOR DETERMINATION OF COMPRESSIVE STRENGTH USING PORTIONS OF BEAMS BROKEN IN FLEXURE (EQUIVALENT CUBE METHOD)
    13/30258710 DC : 0 BS 1881-124 - TESTING CONCRETE - PART 124: METHODS FOR ANALYSIS OF HARDENED CONCRETE
    DD ENV 12141 : 1997 METHOD FOR DETERMINATION OF STABLE OXYGEN ISOTOPE RATIO ([18]O/[16]O) OF WATER FROM FRUIT JUICES, USING ISOTOPE RATIO MASS SPECTROMETRY
    03/102300 DC : DRAFT NOV 2003 BS 6002-3 - SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 3: DOUBLE SAMPLING PLANS INDEXED BY AQL
    09/30142765 DC : 0 BS 8482 - CEREALS - METHOD FOR DETERMINATION OF SCREENINGS AND ADMIXTURE CONTENT OF WHEAT (TRITICUM AESTIVUM L.) AND DURUM WHEAT (TRITICUM DURUM DESF.)
    BS 598-105(2000) : 2000 SAMPLING AND EXAMINATION OF BITUMINOUS MIXTURES FOR ROADS AND OTHER PAVED AREAS - PART 105 - METHODS OF TEST FOR THE DETERMINATION OF TEXTURE DEPTH
    05/30134582 DC : DRAFT JUN 2005 BS 6002-1 - SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 1: SPECIFICATION FOR SINGLE SAMPLING PLANS INDEXED BY ACCEPTANCE QUALITY LIMIT (AQL) FOR LOT-BY-LOT INSPECTION FOR A SINGLE QUALITY CHARACTERISTIC AND A SINGLE AQL
    BS 1881-113(2011) : 2011 TESTING CONCRETE - PART 113: METHOD FOR MAKING AND CURING NO-FINES TEST CUBES
    05/30134584 DC : DRAFT JUN 2005 BS 6002-2 - SAMPLING PROCEDURES FOR INSPECTION BY VARIABLES - PART 2: GENERAL SPECIFICATION FOR SINGLE SAMPLING PLANS INDEXED BY ACCEPTANCE QUALITY LIMIT (AQL) FOR LOT-BY-LOT INSPECTION OF INDEPENDENT QUALITY CHARACTERISTICS
    BS 2782-5.532A(1997) : 1997 METHODS OF TESTING PLASTICS - OPTICAL AND COLOUR PROPERTIES, WEATHERING - PLASTICS - DETERMINATION OF THE TOTAL LUMINOUS TRANSMITTANCE OF TRANSPARENT MATERIALS - SINGLE-BEAM INSTRUMENT
    BS 8855-2(2000) : 2000 SOIL ANALYSIS - METHOD FOR DETERMINATION OF COAL TAR-DERIVED PHENOLIC COMPOUNDS
    BS 6995(1997) : 1997 METHOD FOR EVALUATION OF VULCANIZATION CHARACTERISTICS OF STYRENE-BUTADIENE RUBBER (SBR, YSBR) (EMULSION AND SOLUTION-POLYMERIZED TYPES)
    BS 6043-2.11(1995) : 1995 METHODS OF SAMPLING AND TEST FOR CARBONACEOUS MATERIALS USED IN ALUMINIUM MANUFACTURE - ELECTRODE COKE - DETERMINATION OF VOLATILE MATTER CONTENT
    BS 4551(2005) : 2005 MORTAR - METHODS OF TEST FOR MORTAR AND SCREED - CHEMICAL ANALYSIS AND PHYSICAL TESTING
    ASTM D 7437 : 2008 : R2013 Standard Test Method for Temperature and Hard Water Stability of Engine Coolants
    ASTM D 7437:2008 Standard Test Method for Temperature and Hard Water Stability of Engine Coolants
    BS PD6686(2006) : 2006 GUIDANCE ON DIRECTIVES, REGULATIONS AND STANDARDS RELATED TO PREVENTION OF FIRE AND EXPLOSION IN THE PROCESS INDUSTRIES
    BS 1881-122(2011) : 2011 TESTING CONCRETE - PART 122: METHOD FOR DETERMINATION OF WATER ABSORPTION
    11/30246287 DC : 0 BS 1881-113:2011 - TESTING CONCRETE - METHOD FOR MAKING AND CURING NO-FINES TEST CUBES
    BS 4325-12(1996) : 1996 METHODS FOR ANALYSIS OF OILSEED RESIDUES - DETERMINATION OF GLUCOSINOLATES CONTENT BY HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY
    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 ISO 11214:1996 (published 1996-12) Modified starch. Determination of carboxyl group content of oxidized starch
    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 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 EN 12145 : 1997 FRUIT AND VEGETABLE JUICES - DETERMINATION OF TOTAL DRY MATTER - GRAVIMETRIC METHOD WITH LOSS OF MASS ON DRYING
    BS EN ISO 13468-1:1997 PLASTICS - DETERMINATION OF THE TOTAL LUMINOUS TRANSMITTANCE OF TRANSPARENT MATERIALS - PART 1: SINGLE-BEAM INSTRUMENT
    BS EN 12144 : 1997 FRUIT AND VEGETABLE JUICES - DETERMINATION OF TOTAL ALKALINITY OF ASH - TITRIMETRIC METHOD
    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 4551:2005+A2:2013 MORTAR - METHODS OF TEST FOR MORTAR AND SCREED - CHEMICAL ANALYSIS AND PHYSICAL TESTING

    Standards Referencing This Book - (Show below) - (Hide below)

    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 5725-4:1994 Accuracy (trueness and precision) of measurement methods and results Part 4: Basic methods for the determination of the trueness of a standard measurement method
    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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