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ASTM International - ASTM E96/E96M-15

Standard Test Methods for Water Vapor Transmission of Materials

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Organization: ASTM International
Publication Date: 1 May 2015
Status: inactive
Page Count: 13
ICS Code (Other methods of testing of metals): 77.040.99
significance And Use:

5.1 The purpose of these tests is to obtain, by means of simple apparatus, reliable values of water vapor transfer through permeable and semipermeable materials, expressed in suitable units. These... View More

scope:

1.1 These test methods cover the determination of water vapor transmission (WVT) of materials through which the passage of water vapor may be of importance, such as paper, plastic films, other sheet materials, fiberboards, gypsum and plaster products, wood products, and plastics. The test methods are limited to specimens not over 11/4 in. [32 mm] in thickness except as provided in Section 9. Two basic methods, the Desiccant Method and the Water Method, are provided for the measurement of permeance, and two variations include service conditions with one side wetted and service conditions with low humidity on one side and high humidity on the other. Agreement should not be expected between results obtained by different methods. The method should be selected that more nearly approaches the conditions of use.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. However, derived results can be converted from one system to the other using appropriate conversion factors (see Table 1).

(A) These units are used in the construction trade. Other units may be used in other standards.(B) All conversions of mm Hg to Pa are made at a temperature of 0°C.

1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Document History

March 1, 2016
Standard Test Methods for Water Vapor Transmission of Materials
1.1 These test methods cover the determination of water vapor transmission (WVT) of materials through which the passage of water vapor may be of importance, such as paper, plastic films, other sheet...
ASTM E96/E96M-15
May 1, 2015
Standard Test Methods for Water Vapor Transmission of Materials
1.1 These test methods cover the determination of water vapor transmission (WVT) of materials through which the passage of water vapor may be of importance, such as paper, plastic films, other sheet...
October 15, 2014
Standard Test Methods for Water Vapor Transmission of Materials
1.1 These test methods cover the determination of water vapor transmission (WVT) of materials through which the passage of water vapor may be of importance, such as paper, plastic films, other sheet...
November 1, 2013
Standard Test Methods for Water Vapor Transmission of Materials
1.1 These test methods cover the determination of water vapor transmission (WVT) of materials through which the passage of water vapor may be of importance, such as paper, plastic films, other sheet...
December 15, 2012
Standard Test Methods for Water Vapor Transmission of Materials
1.1 These test methods cover the determination of water vapor transmission (WVT) of materials through which the passage of water vapor may be of importance, such as paper, plastic films, other sheet...
October 1, 2010
Standard Test Methods for Water Vapor Transmission of Materials
1.1 These test methods cover the determination of water vapor transmission (WVT) of materials through which the passage of water vapor may be of importance, such as paper, plastic films, other sheet...
May 1, 2005
Standard Test Methods for Water Vapor Transmission of Materials
1.1 These test methods cover the determination of water vapor transmission (WVT) of materials through which the passage of water vapor may be of importance, such as paper, plastic films, other sheet...
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