ISO 20492-2:2008
Glass in buildings - Insulating glass — Part 2: Chemical fogging tests
ISO 20492:2008 establishes two methods for testing the resistance to fogging of pre-assembled, permanently sealed insulating glass units or insulating glass units with capillary tubes intentionally left open. The two methods are designated as approach 1 for markets such as North America, and approach 2 for markets such as Europe.
ISO 20492:2008 is not applicable to sealed, insulating glass units containing a spandrel glass coating due to testing limitations.
ISO 20492:2008 does not apply to insulating glass (IG) units whose function is decorative only.
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Scope
Normative references
Terms and definitions
Requirements
Approach 1
Approach 2
Test methods
Approach 1
Principle
Test specimens
Apparatus
Volatile fog test apparatus
Ultraviolet light source
Procedure
Approach 2
Principle
Apparatus
The following three apparatus may be used for Approach 2:
Test specimens
Procedure
Test report
Approach 1
Approach 2
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Related Information
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AS/NZS 2208:1996
Safety glazing materials in buildings
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AS/NZS 2208:1996 A1
Safety glazing materials in buildings: Amendment 1
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AS/NZS 4667:2000
Quality requirements for cut-to-size and processed glass
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BS 5051-1:1988
Bullet-resistant glazing, Specification for glazing for interior use
Scope
Normative references
Terms and definitions
Requirements
Approach 1
Approach 2
Test methods
Approach 1
Principle
Test specimens
Apparatus
Volatile fog test apparatus
Ultraviolet light source
Procedure
Approach 2
Principle
Apparatus
The following three apparatus may be used for Approach 2:
Test specimens
Procedure
Test report
Approach 1
Approach 2