AS ISO 6658:2023 identically adopts ISO 6658:2017, which describes tests for the examination of foods and other products by sensory analysis, and includes some general information on the techniques to be used if statistical analysis of the results is required.
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
4.1 Basic information
4.2 Statement of objectives
4.3 Choice of test
4.4 Choosing and training assessors
4.5 Material to be tested
4.6 Test room
4.7 Planning and conduct of the test
5 Test methods
5.1 General
5.2 Discrimination tests
5.2.1 General
5.2.2 Paired comparison test
5.2.2.1 Definition
5.2.2.2 Application
5.2.2.3 Procedure
5.2.2.4 Analysis of results
5.2.3 Triangle test
5.2.3.1 Definition
5.2.3.2 Application
5.2.3.3 Procedure
5.2.3.4 Analysis of results
5.2.4 Duo-trio test
5.2.4.1 Definition
5.2.4.2 Application
5.2.4.3 Procedure
5.2.4.4 Analysis of results
5.2.5 Two-out-of-five test
5.2.5.1 Definition
5.2.5.2 Application
5.2.5.3 Procedure
5.2.5.4 Analysis of results
5.2.6 “A — not A” test
5.2.6.1 Definition
5.2.6.2 Application
5.2.6.3 Procedure
5.2.6.4 Analysis of results
5.2.7 Tetrad test
5.2.7.1 Definition
5.2.7.2 Application
5.2.7.3 Procedure
5.2.7.4 Analysis of results
5.3 Use of scales and categories
5.3.1 General considerations
5.3.2 Interpretation of results
5.3.2.1 Quality of the measurements obtained
5.3.2.2 Statistical power and interpretation
5.3.2.3 Types of measurement
5.3.3 Classification
5.3.3.1 General
5.3.3.2 Application
5.3.4 Grading
5.3.4.1 General
5.3.4.2 Application
5.3.5 Ranking
5.3.5.1 General
5.3.5.2 Application
5.3.5.3 Procedure
5.3.6 Rating and scoring
5.3.6.1 General
5.3.6.2 Application
5.3.6.3 Procedure
5.4 Descriptive tests
5.4.1 General
5.4.2 Qualitative sensory profile
5.4.2.1 Definition
5.4.2.2 Application
5.4.2.3 Procedure
5.4.2.4 Interpretation of results
5.4.3 Quantitative descriptive profile
5.4.3.1 Definition
5.4.3.2 Application
5.4.3.3 Assessors
5.4.3.4 Procedure
5.4.3.5 Interpretation of results
5.4.4 Consensus profile
5.4.4.1 Definition
5.4.4.2 Application
5.4.4.3 Procedure
5.4.4.4 Assessors
5.4.4.5 Interpretation of results
5.4.5 Free-choice profile
5.4.5.1 Definition
5.4.5.2 Application
5.4.5.3 Assessors
5.4.5.4 Procedure
5.4.5.5 Interpretation of results
5.4.6 Flash profile
5.4.6.1 Definition
5.4.6.2 Application
5.4.6.3 Assessors
5.4.6.4 Procedure
5.4.6.5 Interpretation of results
5.4.7 Deviation from reference profile
5.4.7.1 Definition
5.4.7.2 Application
5.4.7.3 Assessors
5.4.7.4 Procedure
5.4.7.5 Interpretation of results
5.4.8 Temporal dominance of sensations (TDS)
5.4.8.1 Definition
5.4.8.2 Application
5.4.8.3 Assessors
5.4.8.4 Procedure
5.4.8.5 Interpretation of results
6 Analysis of results
6.1 General
6.2 Discrimination tests
6.2.1 General
6.2.2 Paired comparison test (see ISO 5495)
6.2.2.1 Statistical interpretation
6.2.2.2 Two-sided test
6.2.2.3 One-sided (directional) test
6.2.3 Triangle test (see ISO 4120)
6.2.4 Duo-trio test (see ISO 10399)
6.2.5 Two-out-of-five test
6.2.6 “A — not A” test (see ISO 8588)
6.2.7 Tetrad test
6.2.8 Treatment of “no difference” responses in discrimination tests
