ASTM D8424-21 - Standard Guide for Retroreflective Composite Optics Laboratory Procedures
Standard Guide for Retroreflective Composite Optics Laboratory Procedures
| Standard number: | D8424-21 |
| Released: | 01.11.2021 |
| Status: | Active |
| Pages: | 6 |
| Section: | 06.02 |
| Keywords: | cap Y; chromaticity coordinates; color measurement; retroreflectivity; retroreflective composite optics; |
1.1 This guide presents a series of options for evaluating lot-to-lot consistency of retroreflective composite optics of the same type and form from the same manufacturer and does not recommend any specific course of action to be taken. This guide is meant to increase the awareness of information and approaches and is not meant to recommend any specific course of action per ASTM’s Form and Style for ASTM Standards definition for a Guide.
1.1.1 This guide does not determine lab procedure selection or acceptance criteria for a specific retroreflective composite optics product for its intended use. It is the responsibility of the manufacturer and customer to negotiate these details based on their specific needs.
1.1.2 This guide is not intended to predict in-service performance levels.
1.1.3 This guide is not intended for comparison of different types of composite optics or manufacturers of composite optics.
1.2 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.
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.