ISO 16820:2019
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ISO 16820:2019
76670

Abstract

 Preview

This document specifies a procedure for statistically analysing data from forced-choice sensory discrimination tests, such as the triangle, duo-trio, 3-AFC, 2-AFC, in which after every trial of the discrimination test the decision can be made to stop testing and declare a difference, to stop testing and declare no difference, or to continue testing.

The sequential method often allows for a decision to be made after fewer trials of the discrimination test than would be required by conventional approaches that use predetermined numbers of assessments.

The method is effective for:

a) determining that either:

  1. a perceptible difference results; or
  2. a perceptible difference does not result when, for example, a change is made in ingredients, processing, packaging, handling or storage;

b) selecting, training and monitoring assessors.

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General information 

  •  :  Published
     : 2019-10
  •  : 2
     : 10
  •  : ISO/TC 34/SC 12 Sensory analysis
  •  :
    67.240 Sensory analysis

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