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ISO 20393:2007

Thermal-insulating materials -- Determination of long-term water absorption by diffusion

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Kehtiv alates 06.06.2007
Tegevusala (ICS grupid)
83.100 Vahtplastid
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06.06.2007
Põhitekst
ISO 20393:2007 specifies equipment and procedures for determining the long-term water absorption of test specimens by diffusion. It is intended for use with thermal-insulation products. It is designed to simulate the absorption of water by products subjected for a long period of time not only to high relative humidity, approximating to 100 %, on both sides but also to a water vapour pressure gradient, as experienced by e.g. inverted roof or unprotected ground insulation. The test is not applicable to all types of thermal-insulation product. The product standard should normally state whether this test is applicable to a particular product.
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