Standard Test Method for Testing Resistance to Fogging in Insulating Glass Units
4.1 This test method is intended to provide a means for testing the resistance to fogging in insulating glass units.
4.2 This test method is also intended to provide a means for testing the resistance to fogging caused by the volatility of components within the unit, including the sealing system components and internal components.
1.1 This test method covers procedures for testing the resistance to fogging of pre-assembled permanently sealed insulating glass units or insulating glass units with capillary tubes intentionally left open or closed.
1.2 This test method is applicable only to insulating glass units that are constructed with glass or suspended film.
1.3 This test method is applicable to both double-glazed and triple-glazed insulating glass units; for triple-glazed insulating glass units where both of the outer lites are glass and the inner lite is either glass or a suspended film.
1.4 The unit construction used in this test method contains construction details that are essential components of the test. Different types of glass, different glass thicknesses, and different cavity sizes may affect the test results.
1.5 This test method is not applicable to insulating glass units containing a spandrel glass coating due to testing limitations.
1.6 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.
1.7 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.
1.8 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.
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