ASTM D1494 - 12

    Standard Test Method for Diffuse Light Transmission Factor of Reinforced Plastics Panels

    Active Standard ASTM D1494 | Developed by Subcommittee: D20.24

    Book of Standards Volume: 08.03


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    Significance and Use

    4.1 The purpose of this test method is to obtain the diffuse light transmittance factor of both flat and corrugated translucent building panels by the use of simple apparatus and by employing as a light source a combination of fluorescent tubes whose energy distribution closely approximates CIE Source C.

    1. Scope

    1.1 This test method covers the determination of the diffuse light transmission factor of translucent reinforced plastics building panels.

    1.2 The values stated in SI units are to be regarded as the standard. The values given in the parentheses are for information only.

    1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in Tables and Figures) shall not be considered as requirements of this standard.

    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 and health practices and determine the applicability of regulatory limitations prior to use.

    Note 1There is no know ISO equivalent to this standard..


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D618 Practice for Conditioning Plastics for Testing

    D883 Terminology Relating to Plastics

    D1600 Terminology for Abbreviated Terms Relating to Plastics

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method


    ICS Code

    ICS Number Code 83.120 (Reinforced plastics); 83.140.10 (Films and sheets)

    UNSPSC Code

    UNSPSC Code 30161505(Panels or paneling)


    Referencing This Standard

    DOI: 10.1520/D1494-12

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D1494-12, Standard Test Method for Diffuse Light Transmission Factor of Reinforced Plastics Panels, ASTM International, West Conshohocken, PA, 2012, www.astm.org

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