ASTM E2189-19 pdf free download.Standard Test Method for Testing Resistance to Fogging in Insulating Glass Units.
ASTM E2189-19 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.
ASTM E2189-19 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.
ASTM E2189-19 is also intended to provide a means for testing the resistance to fogging caused by the volatility ofomponents within the unit, including the sealing system components and internal components.
5. Test Specimens
5.1 Each test specimen shall be manufactured in accordance with Test Method E2 188, Section 5.
5.2 For test specimens containing muntin bars, the specimens shall be fabricated with one vertical and one horizontal muntin bar dividing the specimens into four areas as shown in Fig.1.
5.3 Test specimens containing other types of internal com-ponents shall contain the internal component design to be qualified. If the internal component design cannot fit in the designated specimen size, specimens shall be fabricated con taining representative quantities of each component of the design to be qualified.
5. 4 Vicwing of the fog shall not be compromised by any internal component.