SYMPOSIA PAPER Published: 01 January 1989
STP22964S

Variability of Water Vapor Transmission Rates of Extruded Polystyrene Using ASTM E 96-80 (Desiccant Method)

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A variety of materials are presently being tested for water vapor transmission using ASTM Test Methods for Water Vapor Transmission of Materials (E 96-80). The variability observed in data obtained from testing laboratories using this method has recently become a concern. Although most laboratories are performing analyses in accordance to the test method, the interpretation of the method has resulted in a variety of techniques for sample assembly and data evaluation. This paper presents the techniques and test data provided by two testing laboratories to illustrate the variability resulting from interpretation of the test method.

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Hoffee, AR
Amoco Foam Products Company, Atlanta, GA
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Details
Developed by Committee: C16
Pages: 123–133
DOI: 10.1520/STP22964S
ISBN-EB: 978-0-8031-5094-2
ISBN-13: 978-0-8031-1254-4