ASTM-E96 2005

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E96/E96M-05 Standard Test Methods for Water Vapor Transmission of Materials

Published By	Publication Date	Number of Pages
ASTM	2005	11

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Categories: 77.040.99 - Other methods of testing of metals, ASTM

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Description

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

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.

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PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Summary of Test Methods TABLE 1
2	Significance and Use Apparatus Materials
3	Sampling Test Specimens Attachment of Specimen to Test Dish Procedure for Desiccant Method
4	Procedure for Water Method Calculation and Analysis of Results
6	FIG. 1
7	Report Precision and Bias Keywords TABLE 2
8	X1. STANDARD TEST CONDITIONS X1.1 TABLE 3 TABLE 4
9	X2. CUP DESIGN AND SEALING METHODS X2.1 X2.2 X2.3 FIG. X2.1
10	X2.4 X2.5 X2.6 FIG. X2.2 FIG. X2.3
11	REFERENCES

Additional information

Standard Title	E96/E96M-05 Standard Test Methods for Water Vapor Transmission of Materials
Published Code	ASTM
Publication Date	2005
Pages Count	11
ICS Codes	77.040.99 - Other methods of testing of metals

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ASTM-E96 2005

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