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ASTM-E1697:2005 Edition

ASTM-E1697:2005 Edition

$40.63

E1697-05 Standard Test Method for Unipolar Magnitude Estimation of Sensory Attributes

Published By Publication Date Number of Pages
ASTM 2005 10
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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.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
2 Summary of Test Method
Significance and Use
Conditions of Testing
3 Selection and Training of Panelists
Number of Panelists Required
Reference Samples
TABLE 1
4 Procedureā€”Assigning Magnitude Estimations
Data Analysis
5 Keywords
6 X1. DATA ANALYSIS AND INTERPRETATION USING ANOVA WITHOUT NORMALIZING (NO REPLICATION)
X1.1
X1.2
X1.3
X2. DATA ANALYSIS AND INTERPRETATION USING INTERNAL STANDARD NORMALIZING (NO REPLICATION)
X2.1
X2.2
X2.3
X2.4
TABLE X1.1
TABLE X1.2
TABLE X2.1
7 X2.5
X3. DATA ANALYSIS AND INTERPRETATION USING EXTERNAL CALIBRATION
X3.1
X3.2
X3.3
X3.4
X3.5
X3.6
TABLE X2.2
TABLE X3.1
TABLE X3.2
TABLE X3.3
8 X4. DATA ANALYSIS AND INTERPRETATION USING NO STANDARD NORMALIZING
X4.1
X4.2
X4.3
X4.4
X4.5
X4.6
TABLE X3.4
TABLE X3.5
TABLE X4.1
TABLE X4.2
TABLE X4.3
9 X5. ADDITIONAL INFORMATION
X5.1
X5.2
X5.3
X5.4
X5.5
TABLE X5.1
TABLE X5.2
10 REFERENCES

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