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  • ASTM E 1697 : 1995 : R1999

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Standard Test Method for Unipolar Magnitude Estimation of Sensory Attributes

    Available format(s):  Hardcopy, PDF

    Superseded date:  09-04-2019

    Language(s):  English

    Published date:  10-09-1999

    Publisher:  American Society for Testing and Materials

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    1.1 This test method describes a procedure for the application of unipolar magnitude estimation to the evaluation of the magnitude of sensory attributes. The test method covers procedures for the training of panelists to produce magnitude estimations and statistical evaluation of the estimations.

    1.2 Magnitude estimation is a psychophysical scaling technique in which panelists assign numeric values to the magnitude of an attribute. The only constraint placed upon the panelist is that the values assigned should conform to a ratio principle. For example, if the attribute seems twice as strong in sample B when compared to sample A, sample B should receive a value which is twice the value assigned to sample A.

    1.3 The intensity of attributes such as pleasantness, sweetness, saltiness or softness can be evaluated using magnitude estimation.

    1.4 Magnitude estimation may provide advantages over other scaling methods, particularly when the number of panelists and the time available for training are limited. With approximately 1 h of training, a panel of 15 to 20 naive individuals can produce data of adequate precision and reproducibility. Any additional training that may be required to ensure that the panelists can properly identify the attribute being evaluated is beyond the scope of this test method.

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    Committee E 18
    Document Type Test Method
    Publisher American Society for Testing and Materials
    Status Superseded
    Superseded By

    Standards Referenced By This Book - (Show below) - (Hide below)

    ASTM E 2262 : 2003 : R2014 Standard Practice for Estimating Thurstonian Discriminal Distances
    ASTM E 1207 : 2014 Standard Guide for Sensory Evaluation of Axillary Deodorancy
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