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BS ISO 8588:2017

Sensory analysis. Methodology. "A". "not A" test

standard by British Standard / International Organization for Standardization , 07/31/2017

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Full Description

BS ISO 8588:2017 specifies a procedure for determining whether a perceptible sensory difference exists between samples of two products. The method applies whether a difference exists in a single sensory attribute or in several.

The "A" - "not A" test can be used in sensory analysis in the following ways:
  • a) as a difference test, particularly for evaluating samples having variations, for example, in appearance (making it difficult to obtain strictly identical repeat samples) or in aftertaste (making direct comparison difficult);
  • b) as a recognition test, particularly for determining whether an assessor or group of assessors identifies a new stimulus in relation to a known stimulus (for example, recognition of the quality of the sweet taste of a new sweetener);
  • c) as a perception test, to determine the ability of an assessor to discriminate stimuli.
The "A" - "not A" test is not appropriate for assessing if two products are sufficiently similar to be used interchangeably (i.e. for similarity testing) because the "A" - "not A" test inherently involves replicate evaluations of the same products by all assessors. These replicate evaluations violate the basic assumptions for similarity tests to be statistically valid.

Examples of its application are given in Annex B.


Cross References:
ISO 8586:2012
ISO 5492:2008
ISO 8589:2007 Ed 2
ISO 3534-1:2006


All current amendments available at time of purchase are included with the purchase of this document.
 

Product Details

Published:
07/31/2017
ISBN(s):
9780580844560
Number of Pages:
20
File Size:
1 file , 1.8 MB
Same As:
ISO 8588:2017
Product Code(s):
30290734, 30290734, 30290734
Note:
This product is unavailable in Russia, Ukraine, Belarus
 

Document History

  1. BS ISO 8588:2017

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    Sensory analysis. Methodology. "A". "not A" test

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  2. BS 5929-5:1988


    Methods for sensory analysis of food-'A'-'not A' test

    • Historical Version