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ASTM-E1885:2004 Edition

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E1885-04 Standard Test Method for Sensory Analysis—Triangle Test

Published By Publication Date Number of Pages
ASTM 2004 8
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ASTM E1885-04

Historical Standard: Standard Test Method for Sensory Analysis—Triangle Test

ASTM E1885

Scope

1.1 This test method covers a procedure for determining whether a perceptible sensory difference exists between samples of two products.

1.2 This test method applies whether a difference may exist in a single sensory attribute or in several.

1.3 This test method is applicable when the nature of the difference between the samples is unknown. It does not determine the size or the direction of the difference. The attribute(s) responsible for the difference are not identified.

1.4 Compared to the duo-trio test, the triangle test can achieve an equivalent level of statistical significance with fewer assessors. For details on how the triangle test compares to other three-sample tests, see Refs (1), (2), (3) and (4).

1.5 This test method is applicable only if the products are homogeneous. If two samples of the same product can often be distinguished, then another method, for example, descriptive analysis, may be more appropriate.

1.6 This test method is applicable only when the products do not cause excessive sensory fatigue, carryover or adaptation.

1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

sensory; sensory analysis; triangle test

ICS Code

ICS Number Code 67.240 (Sensory analysis)

DOI: 10.1520/E1885-04

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
Summary of Test Method
2 Significance and Use
Apparatus
Assessors
Number of Assessors
3 Procedure
Analysis and Interpretation of Results
Report
Precision and Bias
Keywords
4 A1. NUMBER OF ASSESSORS AND CORRECT RESPONSES NEEDED FOR A TRIANGLE TEST
TABLE A1.1
5 X1. TRIANGLE TEST TO CONFIRM THAT A DIFFERENCE EXISTS: IMPROVED NON-ALCOHOLIC BEER
X1.1 Background
X1.2 Test Objective
X1.3 Number of Assessors
X1.4 Conducting the Test
X1.5 Analysis and Interpretation of Results
TABLE A1.2
6 X1.6 Report and Conclusions
X2. TRIANGLE TEST TO CONFIRM THAT TWO SAMPLES ARE SIMILAR CHOICE OF FOIL AND PAPER WRAPPING FOR CANDY BAR
X2.1 Background
X2.2 Test Objective
X2.3 Number of Assessors
X2.4 Conducting the Test
X2.5 Analysis and Interpretation of Results
FIG. X1.1
FIG. X2.1
7 X3. TRIANGLE TEST THAT BALANCES THE RISKS OF DIFFERENCE AND SIMILARITY PROCESS COST REDUCTION VERSUS QUALITY CONTROL
X3.1 Background
X3.2 Test Objective
X3.3 Number of Assessors
X3.4 Analysis and Interpretation of Results
X3.5 Conclusion
FIG. X2.2
8 X4. CONFIDENCE INTERVALS FOR TRIANGLE TESTS
X4.1 Background
X4.2 Analysis and Interpretation of Results
REFERENCES
ASTM-E1885
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