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  • ASTM
    F1249-90(1995) Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor
    Edition: 1995
    $103.58
    Unlimited Users per year

Description of ASTM-F1249 1995

ASTM F1249-90(1995)

Historical Standard: ASTM F1249-90(1995) Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor

SUPERSEDED (see Active link, below)




ASTM F1249

1. Scope

1.1 This test method covers a procedure for determining the rate of water vapor transmission through flexible barrier materials. The method is applicable to sheets and films up to 3 mm (0.1 in.) in thickness, consisting of single or multilayer synthetic or natural polymers and foils, including coated materials. It provides for the determination of (1 ) water vapor transmission rate (WVTR), (2) the permeance of the film to water vapor, and (3) for homogeneous materials, water vapor permeability coefficient.

Note 1Values for water vapor permeance and water vapor permeability must be used with caution. The inverse relationship of WVTR to thickness and the direct relationship of WVTR to the partial pressure differential of water vapor may not always apply.

1.2 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.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D374 Test Methods for Thickness of Solid Electrical Insulation

D1898 Practice for Sampling of Plastics

E96/E96M Test Methods for Water Vapor Transmission of Materials

E104 Practice for Maintaining Constant Relative Humidity by Means of Aqueous Solutions

E178 Practice for Dealing With Outlying Observations

E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method


Keywords

Flexible barrier materials; Diffusion cell apparatus; Infrared (IR) analysis--plastics; Plastic sheet and film; Polymers; Referee methods; Water vapor transmission (WVT);


ICS Code

ICS Number Code 83.140.10 (Films and sheets)


DOI: 10.1520/F1249-90R95

ASTM International is a member of CrossRef.


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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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