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ASTM E96

Standard Methods of Test for Water Vapor Transmission of Materials in Sheet Form

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Organization: ASTM
Publication Date: 20 September 1966
Status: inactive
Page Count: 8
ICS Code (Other methods of testing of metals): 77.040.99
scope:

These methods cover determination of the rate of water vapor transmission (WVT) of materials in sheet form. The methods are applicable to materials such as paper, plastic films, and sheet materials in general. The methods are most suitable for specimens 1/8 in. (3.18 mm) or less in thickness, but may be used with caution for somewhat thicker specimens. For specimens of materials used in building construction and similar materials greater thanĀ 1/8 in. in thickness, see ASTM Methods C355, Test for Water Vapor Transmission of Thick Materials.2 Six procedures are provided for the measurement of transmission under different test conditions, as follows:

Procedure A-For use when the materials to be tested are employed in the low range of humidities.

Procedure B-For use when the materials to be tested are employed in the high range of humidities, but will not normally be wetted.

Procedure B W-For use when materials to be tested may in service be wetted on one surface but under conditions where the hydraulic head is relatively unimportant and moisture transfer is governed by capillary and water vapor diffusion forces.

Procedure C-Conducted at an elevated temperature for use with materials employed in the low range of humidities, and intended to shorten the time of testing of highly impermeable materials. This procedure eliminates, in most cases, the need for refrigeration.

Procedure D-Conducted at an elevated temperature for use with materials employed in the high range of humidities, but not normally wetted, and intended to shorten the time of testing of highly impermeable materials employed in this range. This procedure also eliminates, in most cases, the need for refrigeration.

Procedure E-For use in measuring the WVT at an elevated temperature, with a very low humidity on one side of the sheet and a high humidity on the other side.

NOTE 1-The values stated in U.S. customary units are to be regarded as the standard. The metric equivalents of U.S. customary units may be approximate.

2Annual Book of ASTM Standards, Part 18.

Document History

March 1, 2016
Standard Test Methods for Water Vapor Transmission of Materials
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, 2015
Standard Test Methods for Water Vapor Transmission of Materials
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
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
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
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
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
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...
April 10, 2000
Standard Test Methods for Water Vapor Transmission of Materials
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...
April 10, 2000
Standard Test Methods for Water Vapor Transmission of Materials
1. 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,...
January 1, 1995
Standard Test Methods for Water Vapor Transmission of Materials
1. 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,...
January 15, 1994
STANDARD TEST METHODS FOR WATER VAPOR TRANSMISSION OF MATERIALS
A description is not available for this item.
January 15, 1993
STANDARD TEST METHODS FOR WATER VAPOR TRANSMISSION OF MATERIALS
A description is not available for this item.
January 15, 1992
STANDARD TEST METHODS FOR WATER VAPOR TRANSMISSION OF MATERIALS
A description is not available for this item.
February 9, 1990
STANDARD TEST METHODS FOR WATER VAPOR TRANSMISSION OF MATERIALS
A description is not available for this item.
October 31, 1980
STANDARD TEST METHODS FOR WATER VAPOR TRANSMISSION OF MATERIALS (E2-1987)
A description is not available for this item.
October 31, 1980
STANDARD TEST METHODS FOR WATER VAPOR TRANSMISSION OF MATERIALS
These 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 mms, other sheet materials,...
October 31, 1980
STANDARD TEST METHODS FOR WATER VAPOR TRANSMISSION OF MATERIALS
These 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 fllms, other sheet...
ASTM E96
September 20, 1966
Standard Methods of Test for Water Vapor Transmission of Materials in Sheet Form
These methods cover determination of the rate of water vapor transmission (WVT) of materials in sheet form. The methods are applicable to materials such as paper, plastic films, and sheet materials...
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