ASTM-E809 2021

$37.38

E809-21 Standard Practice for Measuring Photometric Characteristics of Retroreflectors

Published By	Publication Date	Number of Pages
ASTM	2021	11

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Categories: 17.180.20 - Colours and measurement of light, ASTM

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Description

ASTM E809-21

Active 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

Additional information

Standard Title	E809-21 Standard Practice for Measuring Photometric Characteristics of Retroreflectors
Published Code	ASTM
Publication Date	2021
Pages Count	11
ICS Codes	17.180.20 - Colours and measurement of light