ISO 4120:2021
Current
The latest, up-to-date edition.
Sensory analysis — Methodology — Triangle test
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French, English
03-03-2021
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 more efficient than the duo-trio test (described in ISO 10399), but has limited use with products that exhibit strong carryover and/or lingering flavours.
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 homogeneous.
The method is effective for:
a) determining that:
- either a perceptible difference results (triangle testing for difference);
- a perceptible difference does not result (triangle testing for similarity),
when, for example, a change is made in ingredients, processing, packaging, handling or storage;
b) selecting, training and monitoring assessors.
| Committee |
ISO/TC 34/SC 12
|
| DocumentType |
Standard
|
| Pages |
17
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| PN-EN ISO 4120:2021-08 | Identical |
| ABNT NBR ISO 4120:2023 | Identical |
| NS-EN ISO 4120:2021 | Identical |
| NEN-EN-ISO 4120:2021 | Identical |
| I.S. EN ISO 4120:2021 | Identical |
| BS EN ISO 4120:2021 | Equivalent |
| DIN EN ISO 4120:2021-06 | Equivalent |
| UNE-EN ISO 4120:2022 | Identical |
| EN ISO 4120:2021 | Identical |
| IS 17824 : 2022 | Identical |
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