ASTM D4674-19
Standard Practice for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Office Environments

Standard No.

ASTM D4674-19

Release Date

2019

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D4674-19

Scope

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 Airconditioning 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 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. Specific precautionary statements are given in Section 7. NOTE 2—There is no known ISO equivalent to this standard. 1.7 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.

ASTM D4674-19 Referenced Document

• ASTM D1729 Standard Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials
• ASTM D2244 Standard Test Method for Calculation of Color Differences From Instrumentally Measured Color Coordinates
• ASTM D3980 Standard Practice for Interlaboratory Testing of Paint and Related Materials
• ASTM D5870 Standard Practice for Calculating Property Retention Index of Plastics
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
• ASTM G113 Standard Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
• ASTM G141 Standard Guide for Addressing Variability in Exposure Testing on Nonmetallic Materials
• ASTM G147 Standard Practice for Conditioning and Handling of Nonmetallic Materials for Natural and Artificial Weathering Tests
• ASTM G151 Standard Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources
• ASTM G154 Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Materials*， 2023-01-01 Update
• ASTM G169 Standard Guide for Application of Basic Statistical Methods to Weathering Tests*， 2024-04-22 Update

ASTM D4674-19 history

• 2019 ASTM D4674-19 Standard Practice for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Office Environments
• 2002 ASTM D4674-02a(2010) Standard Practice for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Office Environments
• 2002 ASTM D4674-02a Standard Practice for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Office Environments
• 2002 ASTM D4674-02 Standard Test Method for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Fluorescent Lighting and Window-Filtered Daylight
• 2002 ASTM D4674-89(1997) Standard Test Method for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Fluorescent Lighting and Window-Filtered Daylight