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  • ASTM
    E809-21 Standard Practice for Measuring Photometric Characteristics of Retroreflectors (Redline)
    Edition: 2021
    $113.57
    Unlimited Users per year

Description of ASTM-E809 2021

ASTM E809-21

Redline Standard: Standard Practice for Measuring Photometric Characteristics of Retroreflectors




ASTM E809

Scope

1.1 This practice describes the general procedures for instrumental measurement of the photometric characteristics of retroreflective materials and retroreflective devices.

1.2 This practice is a comprehensive guide to the photometry of retroreflectors but does not include geometric terms that are described in Practice E808.

1.3 This practice describes the parameters that are required when stating photometric measurements in specific tests and specifications for retroreflectors.

1.4 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.

1.5 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.

1.6 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.


Keywords

photometric characteristics; photometric measurements; photometric range; retroreflective; retroreflection; retroreflectors;


ICS Code

ICS Number Code 17.180.20 (Colours and measurement of light)


DOI: 10.1520/E0809-21

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