标准编号：ISO 16820:2019
中文名称：感官分析 方法学 顺序分析
英文名称：Sensory analysis — Methodology — Sequential analysis
发布日期：2019-10
标准范围
This document specifies a procedure for statistically analysing data from forced-choice sensory
discrimination tests, such as the triangle, duo-trio, 3-AFC, 2-AFC, in which after every trial of the
discrimination test the decision can be made to stop testing and declare a difference, to stop testing
and declare no difference, or to continue testing.
The sequential method often allows for a decision to be made after fewer trials of the discrimination test
than would be required by conventional approaches that use predetermined numbers of assessments.
The method is effective for:
a) determining that either:
1) a perceptible difference results; or
2) a perceptible difference does not result when, for example, a change is made in ingredients,
processing, packaging, handling or storage;
b) selecting, training and monitoring assessors.
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