Standard Test Method for
Water Vapor Transmission of Pressure-Sensitive Tapes1

This standard is issued under the fixed designation D 3833/D3833M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.

1. Scope

1.1 This test method provides one procedure for measuring
the water vapor transmission rate of pressure-sensitive tape.

1.2 The values stated in either SI or inch-pound units are to
be regarded separately as standard. The values stated in each
the system may not be exact equivalents; therefore, each system
must be used independently, without combining values in any
way.

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

2. Referenced Documents

2.1 ASTM Standards:
D 996 Terminology of Packaging and Distribution Environments2
D 3715/D3715M Practice for Quality Assurance of
Pressure-Sensitive Tapes2
D 4332 Practice for Conditioning Containers, Packages, or
Packaging Components for Testing2
E 96 Test Methods for Water Vapor Transmission of Materials3
E 122 Practice for Calculating Sample Size to Estimate,
With a Specified Tolerable Error, the Average for a
Characteristics of a Lot or Process4

3. Terminology

3.1 Definitions—General terms in this test method are
defined in Terminology D 996.

4. Summary of Test Method

4.1 The pressure-sensitive tape is secured by its adhesive to
a test cup containing a desiccant. The assembly is exposed to
a controlled atmosphere and weighed after two intervals of that

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