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Full Description

1.1 This practice covers the basic principles and operating procedures for using fluorescent light to determine color stability of plastics when materials are exposed in typical office environments where fluorescent overhead lighting and window-filtered daylight are used for illumination and where temperature and humidity conditions are in accordance with American Society of Heating, Refrigerating, and Air-conditioning Engineers (ASHRAE) recommendations for workers' comfort.

1.2 This practice describes four methods where specimens are exposed to fluorescent light under controlled environmental conditions. Two of the methods use an exposure device that provides for mixing of fluorescent lamps and two of the methods use devices that comply with Practice G154.

Note 1 - Method I uses cool white fluorescent lamps and window glass filtered fluorescent UVB lamps and is the same method described in previous versions of this standard.

1.3 Specimen preparation and evaluation of the results are covered in ASTM methods or specifications for specific materials. General guidance is given in Practice G151. More specific information about methods for determining the change in properties after exposure and reporting these results is described in Practice D5870.

1.4 The values stated in SI units are to be regarded as the standard.

1.5 Unless otherwise specified, all dimensions are nominal.

1.6 This practice may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns, is 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. Specific precautionary statements are given in Section 7.

Note 2 - There is no known ISO equivalent to this standard.

 

Document History

  1. ASTM D4674-19


    Standard Practice for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Office Environments

    • Most Recent
  2. ASTM D4674-02a(2010)

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    Standard Practice for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Office Environments (Withdrawn 2019)

    • Historical Version
  3. ASTM D4674-02a


    Standard Practice for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Office Environments

    • Historical Version
  4. ASTM D4674-02


    Standard Test Method for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Fluorescent Lighting and Window-Filtered Daylight

    • Historical Version
  5. ASTM D4674-89(1997)


    Standard Test Method for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Fluorescent Lighting and Window-Filtered Daylight

    • Historical Version