UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

ISO 10399

Sensory analysis - Methodology - Duo-trio test

active, Most Current
Buy Now
Organization: ISO
Publication Date: 1 December 2017
Status: active
Page Count: 26
ICS Code (Sensory analysis): 67.240
scope:

This document specifies a procedure for determining whether a perceptible sensory difference or similarity exists between samples of two products. The method is a forced-choice procedure. The method is applicable whether a difference exists in a single sensory attribute or in several attributes.

The method is statistically less efficient than the triangle test (described in ISO 4120) but is easier to perform by the assessors.

The method is applicable even when the nature of the difference is unknown (i.e. it determines neither the size nor the direction of difference between samples, nor is there any indication of the attribute(s) responsible for the difference). The method is applicable only if the products are fairly homogeneous.

The method is effective for

a) determining that

1) either a perceptible difference results (duo-trio testing for difference), or

2) a perceptible difference does not result (duo-trio testing for similarity) when, for example, a change is made in ingredients, processing, packaging, handling or storage, and

b) for selecting, training and monitoring assessors.

Two forms of the method are described:

- the constant-reference technique, used when one product is familiar to the assessors (e.g. a sample from regular production);

- the balanced-reference technique, used when one product is not more familiar than the other

Document History

ISO 10399
December 1, 2017
Sensory analysis - Methodology - Duo-trio test
This document specifies a procedure for determining whether a perceptible sensory difference or similarity exists between samples of two products. The method is a forced-choice procedure. The method...
June 15, 2004
Sensory analysis Methodology Duo-trio test
A description is not available for this item.
January 1, 1991
Sensory Analysis - Methodology - Duo-Trio Test
A description is not available for this item.

References

Advertisement