ASTM_E_2189_-_10e1.pdf

Designation:E2189101Standard Test Method forTesting Resistance to Fogging in Insulating Glass Units1This standard is issued under the fixed designation E2189;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTE6.1.6,6.1.7,and 6.2.1 were corrected editorially in March 2012.1.Scope1.1 This test method covers procedures for testing theresistance to fogging of preassembled permanently sealedinsulating glass units or insulating glass units with capillarytubes intentionally left open.1.2 This test method is applicable only to sealed insulatingglass units that are constructed with glass.1.3 This test method is applicable to both double-glazed andtriple-glazed insulating glass units;for triple-glazed insulatingglass units where both of the outer lites are glass and the innerlite is either glass or a suspended film.1.4 The unit construction used in this test method containsconstruction details that are essential components of the test.Different types of glass,different glass thicknesses and differ-ent airspace sizes may affect the test results.1.5 This test method is not applicable to sealed insulatingglass units containing a spandrel glass coating due to testinglimitations.1.6 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.7 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C162 Terminology of Glass and Glass ProductsC717 Terminology of Building Seals and SealantsE631 Terminology of Building ConstructionsE2188 Test Method for Insulating Glass Unit PerformanceE2190 Specification for Insulating Glass Unit Performanceand Evaluation3.Terminology3.1 Definition of Terms:3.1.1 For definitions of terms found in the standard,refer toTerminology C717,Terminology C162 and Terminology E631.3.2 Definitions of Terms Specific to This Standard:3.2.1 fog,nvisible deposits present after testing in accor-dance with Section 8 that were not present prior to testing.Fogdoes not include defects in a glass coating or the glass substratewhen examined prior to testing.4.Significance and Use4.1 This test method is intended to provide a means fortesting the resistance to fogging in sealed insulating glass units.4.2 This test method is also intended to provide a means fortesting the resistance to fogging caused by components in theinterior of the unit.These interior components include,but arenot limited to,suspended or applied films,decorativecomponents,muntins,and coatings.5.Test Specimens5.1 Each test specimen shall be manufactured in accordancewith Test Method E2188,Section 5.5.2 For test specimens containing muntin bars,the speci-mens shall be fabricated with the muntin bars dividing thespecimens into nine equal areas(3 by 3).See Fig.1.5.3 Viewing of the fog shall not be compromised by anyinternal component.5.4 For double-glazed units,at least three specimens ofidentical component materials and construction shall be sub-mitted.5.5 For triple-glazed units,at least five specimens of iden-tical component materials and construction shall be submitted.For these units,the manufacturer shall specify the exteriorsurface.1This test method is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.22on Durability Performance of Building Constructions.Current edition approved Nov.1,2010.Published November 2010.Originallyapproved in 2002.Last previous editions approved in 2002 as E2189 02.DOI:10.1520/E2189-10E01.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 NOTE1Certain reflective coatings may interfere with the ability toview fog.5.6 During all stages of storage and handling,the units shallbe held in a vertical position with equal support to all panes andno compression loading.5.7 Damaged units shall not be tested.6.Apparatus6.1 Volatile Fog Test Apparatus:6.1.1 The dimensions and components are found in Fig.2.The construction of the apparatus shall be capable of maintain-ing 50 6 3C.In order to maintain this temperature,a fan shallbe mounted in the box.The fan shall run as needed in order tomaintain the air temperature in the apparatus.6.1.2 The apparatus shall be constructed from sturdy,solidmaterials that min