ASTM G141-09(2013)
Standard Guide for Addressing Variability in Exposure Testing of Nonmetallic Materials

Standard No.

ASTM G141-09(2013)

Release Date

2009

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM G141-09(2021)

Latest

ASTM G141-09(2021)

Scope

4.1 Many standards and specifications reference exposure tests performed according to standards that are the responsibility of Committee G03 on Durability of Nonmetallic Materials. In many cases, use of the data generated in these tests fails to consider the ramifications of variability in the exposure test practices. This variability can have a profound effect on the interpretation of results from the exposure tests, and if not taken into consideration in test design and data analysis, can lead to erroneous or misleading conclusions. This guide lists some of the sources for test variability and recommends strategies for executing successful weathering studies. Not all sources of variability in weathering testing are addressed in this guide. Specific materials, sampling procedures, specimen preparation, specimen conditioning, and material property measurements can contribute significantly to variability in weathering test results. Many of these concerns are addressed in Guide G147. To reduce the contribution of an instrumental method to test variability, it is essential to follow appropriate calibration procedures and ASTM standards associated with the particular property measurement. Additional sources of variability in test results are listed in Guide D4853, along with methods for identifying probable causes.

1.1 This guide covers information on sources of variability and strategies for its reduction in exposure testing, and for taking variability into consideration in the design, execution, and data analysis of both exterior and laboratory accelerated exposure tests.

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

1.3 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.

ASTM G141-09(2013) Referenced Document

• ASTM D4853 Standard Guide for Reducing Test Variability
• ASTM D6631 Standard Guide for Committee D01 for Conducting an Interlaboratory Study for the Purpose of Determining the Precision of a Test Method
• ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
• 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 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 G152 Standard Practice for Operating Open Flame Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials*， 2024-04-20 Update
• ASTM G153 Standard Practice for Operating Enclosed Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials
• ASTM G154 Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Materials
• ASTM G155 Standard Practice for Operating Xenon Arc Lamp Apparatus for Exposure of Materials*， 2024-04-20 Update
• ASTM G166 Standard Guide for Statistical Analysis of Service Life Data
• ASTM G169 Standard Guide for Application of Basic Statistical Methods to Weathering Tests*， 2024-04-20 Update
• ASTM G172 Standard Guide for Statistical Analysis of Accelerated Service Life Data
• ASTM G183 Standard Practice for Field Use of Pyranometers, Pyrheliometers and UV Radiometers
• ASTM G24 Standard Practice for Conducting Exposures to Daylight Filtered Through Glass
• ASTM G7 Standard Practice for Atmospheric Environmental Exposure Testing of Nonmetallic Materials
• ASTM G90 Standard Practice for Performing Accelerated Outdoor Weathering of Nonmetallic Materials Using Concentrated Natural Sunlight

ASTM G141-09(2013) history

• 2021 ASTM G141-09(2021) Standard Guide for Addressing Variability in Exposure Testing of Nonmetallic Materials
• 2009 ASTM G141-09(2013) Standard Guide for Addressing Variability in Exposure Testing of Nonmetallic Materials
• 2009 ASTM G141-09 Standard Guide for Addressing Variability in Exposure Testing on Nonmetallic Materials
• 2003 ASTM G141-03 Standard Guide for Addressing Variability in Exposure Testing on Nonmetallic Materials
• 1996 ASTM G141-96 Standard Guide for Addressing Variability in Exposure Testing on Nonmetallic Materials