ASTM D1729-22
Standard Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials

Standard No.

ASTM D1729-22

Release Date

2022

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D1729-22

Scope

1.1 This practice specifies the equipment and procedures for visual appraisal of the colors and color differences of opaque materials that are diffusely illuminated. These specifications are of critical importance in color matching. This practice requires judgments by observers with a minimum of normal color vision and preferably superior as rated with the FM-100 Hue Test as specified in Guide E1499. 1.2 Critical visual appraisal of colors and color differences of materials such as metallic and pearlescent paints requires illumination that is nearly a geometric simulation of direct sunlight, because such directional illumination permits observation of the sparkle (glitter) and goniochromatism that characterize such materials. Such viewing conditions are beyond the scope of this practice. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.4 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. 1.5 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.

ASTM D1729-22 Referenced Document

• ASTM D1535 Standard Practice for Specifying Color by the Munsell System
• ASTM D4086 Standard Practice for Visual Evaluation of Metamerism
• ASTM D523 Standard Test Method for Specular Gloss
• ASTM D5531 Standard Guide for Preparation, Maintenance, and Distribution of Physical Product Standards for Color and Geometric Appearance of Coatings
• ASTM E1164 Standard Practice for Obtaining Spectrophotometric Data for Object-Color Evaluation
• ASTM E1499 Standard Guide for Selection, Evaluation, and Training of Observers
• ASTM E284 Standard Terminology of Appearance
• ASTM E308 Standard Practice for Computing the Colors of Objects by Using the CIE System
• ISO 3664:2009 Graphic technology and photography - Viewing conditions

ASTM D1729-22 history

• 2022 ASTM D1729-22 Standard Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials
• 2016 ASTM D1729-16 Standard Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials
• 1996 ASTM D1729-96(2009) Standard Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials
• 1996 ASTM D1729-96(2003) Standard Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials
• 1996 ASTM D1729-96 Standard Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials