Your shopping cart is empty!
ASTM International, 08/01/2018
Publisher: ASTM
File Format: PDF
$27.00$54.00
Published:01/08/2018
Pages:13
File Size:1 file , 140 KB
Note:This product is unavailable in Russia, Ukraine, Belarus
1.1 This test method describes a procedure for comparing two products.
1.2 This test method does not describe the Thurstonian modeling approach to this test.
1.3 This test method is sometimes referred to as the simple-difference test.
1.4 A same-different test determines whether two products are perceived to be the same or different overall.
1.5 The procedure of the test described in this test method consists of presenting a single pair of samples to each assessor. The presentation of multiple pairs would require different statistical treatment and it is outside of the scope of this test method.
1.6 This test method is not attribute-specific, unlike the directional difference test.
1.7 This test method is not intended to determine the magnitude of the difference; however, statistical methods may be used to estimate the size of the difference.
1.8 This test method may be chosen over the triangle or duo-trio tests where sensory fatigue or carry-over are a concern, or where a simpler task is needed.
1.9 This standard may involve hazardous materials, operations, and equipment. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.10 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Standard Reference Radiographs for Ductile Iron Castings
$23.00 $46.00
Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use
$24.00 $48.00
Standard Specification for Ethyl Tertiary-Butyl Ether (ETBE) for Blending with Gasolines for Use as Automotive Spark-Ignition Engine Fuel
$25.00 $50.00
Standard Specification for Alloy Steel Socket Button and Flat Countersunk Head Cap Screws
$30.00 $60.00