ISO 11132-2021 pdf free download – Sensory analysis — Methodology — Guidelines for the measurement of the performance of a quantitative descriptive sensory panel.
This document gives guidelines for assessing the overall performance of a quantitative descriptivepanel and the performance of each panel member.
This document is applicable to the validation of the training of individual assessors or panels, as well asto the performance monitoring of established panels.
This document does not apply to the panel performance for descriptive methods where the individualscores of each assessor are not recorded, where there is no single list of attributes that is common to allthe assessors, or where dominance rather than intensity is measured.Consequently, the performanceof descriptive panels using methods such as consensus profile, free-choice profile, flash profile andtemporal dominance of sensations (TDS) are out of scope.
The methods specified in this document are for monitoring and assessing the ability of a panel and itsassessors to discriminate between products, the agreement between assessors of the same panel andthe repeatability of these assessors in their intensity scoring.
Reproducibility, including both the comparison between panels and the comparison within the samepanel of several evaluations conducted under different conditions (i.e. separated in time), is out of scopeof this document.
The methods specified in this document can be used, in full or a selection only, by the panel leader toappraise continuously the performance of panels or individual assessors. The methods listed are notexhaustive and other appropriate methods can also be used.
2Normative references
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references,only the edition cited applies. Forundated references, the latest edition of the referenced document (including any amendments) applies.ISO 5492,Sensory analysis — Vocabulary
3Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5492 and the following apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses:- ISo online browsing platform: available at https://www.iso.org/obp
—IEC Electropedia: available at http://www.electropedia.org/
3.1
agreement
ability of different panels or assessors to exhibit the same product differences when assigning scores ona given attribute to the same set of products
3.2
panel drift
phenomenon where a panel, over time, changes in sensitivity or becomes susceptible to biases and asa consequence changes the location on the scale where an attribute is rated for a constant, referenceproduct
3.3
performance
ability of a panel or an assessor to make reliable and valid assessments of stimuli and stimulusattributes3.4
validation
process of establishing that a panel or assessor is able to meet specified performance(3.3) criteria3.5
session
period of time in which products are assessed
Note 1 to entry: In a single session either one or several products may be assessed by one or several assessors.For an assessor, whether alone or as part of a panel, sessions are separated in time.
[SOURCE: ISO 5492:2008/Amd.1:2016,4.63]
3.6
replicate
occurrence of a particular condition in an experimental design
Note 1 to entry: The term usually implies that the occurrence is one of several of the same kind, but it can refer toa single occurrence. When the condition is performed twice, the wording is “two repetitions”, etc.
Note 2 to entry: To specify more than one occurrence of a condition, the terms”replication” or “replicate session”are more explicit.
Note 3 to entry: A “replicate session” is a session (3.5) in which the assessors, products, test conditions and taskare the same.
3.7
assessor bias
tendency of an assessor to give scores which are consistently above or below the true score when that isknown or the panel mean when it is not
[SOURCE: ISO 5492:2008/Amd.1:2016,1.40]3.8
order bias
arising from a product’s spatial or temporal position relative to a group of products being assessedNote 1 to entry: The term includes both “position bias” and “sequential bias”.ISO 11132 pdf download.