Norm

NEN-ISO 10399:2004 en

Sensorische analyse - Methodologie - Duo-trio test

  • Deze norm is ingetrokken sinds 04-03-2010

98,05

Over deze norm

Status Ingetrokken
Aantal pagina's 19
Commissie Beleidscommissie Landbouw & Levensmiddelen
Gepubliceerd op 01-07-2004
Taal Engels
This International Standard describes 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 - either a perceptible difference results (duo-trio testing for difference), or - 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; b) or 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), and - the balanced-reference technique, used when one product is not more familiar than the other.

Details

ICS-code 67.240
Nederlandse titel Sensorische analyse - Methodologie - Duo-trio test
Engelse titel Sensory analysis - Methodology - Duo-trio test
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