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1.1 This practice covers procedures to be followed for direct exposure of nonmetallic materials to the environment. When originators of a weathering test have the actual exposure conducted by a separate agency, the specific conditions for the exposure of test and control specimens should be clearly defined and mutually agreed upon between all parties.
1.2 For exposures behind glass, refer to Practice G 24.
1.3 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only.
1.4 This practice is technically equivalent to the parts of ISO 877 that describe direct exposures of specimens to the environment.
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 and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E41 Terminology Relating To Conditioning
E824 Test Method for Transfer of Calibration From Reference to Field Radiometers
E913 Method for Calibration of Reference Pyranometers With Axis Vertical by the Shading Method
E941 Test Method for Calibration of Reference Pyranometers With Axis Tilted by the Shading Method
G24 Practice for Conducting Exposures to Daylight Filtered Through Glass
G113 Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
G130 Test Method for Calibration of Narrow- and Broad-Band Ultraviolet Radiometers Using a Spectroradiometer
ISO StandardsISO9370 Plastics--Instrumental Determination of Radiant Exposure in Weathering Tests--General Guidance and Basic Test Method
ICS Number Code 19.040 (Environmental testing)