ČSN EN ISO 10399 (560032) Aktuální vydání

Senzorická analýza - Metodologie - Zkouška duo-trio

ČSN EN ISO 10399 Senzorická analýza - Metodologie - Zkouška duo-trio
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Anotace obsahu normy

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.

Označení ČSN EN ISO 10399 (560032)
Katalogové číslo 504952
Cena 350 Kč350
Datum schválení 1. 8. 2018
Datum účinnosti 1. 9. 2018
Jazyk angličtina (obsahuje pouze anglický originál)
Počet stran 32 stran formátu A4
EAN kód 8596135049523
Tato norma nahradila ČSN EN ISO 10399 (560032) z října 2010
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