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Standard Practice for Evaluation of Instrumental Color Difference with a Gray Scale
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STANDARD published on 1.3.2018
Designation standards: ASTM E3040-18
Note: WITHDRAWN
Publication date standards: 1.3.2018
SKU: NS-846318
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
color difference, gray scale, instrumental color-difference,, ICS Number Code 17.180.20 (Colours and measurement of light)
Significance and Use | ||||||||||||||||
5.1 The gray scale grade GS5.2 A major advantage of the instrumental method of obtaining gray scale grades is that under the visual method substantial screening and training of the operators in visual color assessment is required. No such burden is placed on the operators in this instrumental method. 5.3 The method is usually not used for staining tests which have their own gray scale for staining. |
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1. Scope | ||||||||||||||||
1.1 Test Method D2616 describes a painted gray scale and the procedure to be used in the visual evaluation of color differences on non-self-luminous materials by comparison to this scale. This practice provides an alternative method of obtaining a similarly valued result by an instrumental method. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard, except that the test results of this test method are converted by the calculations to an arbitrary visual scale defined by Test Method D2616, whose units are called GSC (Gray Scale for Change in Color). 1.3 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. 1.4 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. |
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