ASTM D1434 PDF

A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Scope 1. This test method provides for the determination of 1 gas transmission rate GTR , 2 permeance, and, in the case of homogeneous materials, 3 permeability. It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of regulatory limitations prior to use.

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More F Correlation of measured values with any given use, such as packaged contents protection, must be determined by experience. The gas transmission rate is affected by conditions not specifically provided for in these tests, such as moisture content Note 2 , plasticizer content, and nonhomogeneities.

These tests do not include any provision for testing seals that may be involved in packaging applications. Agreement with other methods is sometimes poor and may be material-dependent. The materials being tested often affect the between-laboratory precision. The causes of these variations are not known at this time. It is suggested that this method not be used for referee purposes unless purchaser and seller can both establish that they are measuring the same quantity to a mutually agreed upon level of precision.

Even in essentially homogeneous structures, variations in morphology as indicated, for example, by density and thermal history may influence permeability. Scope 1. This test method provides for the determination of 1 gas transmission rate GTR , 2 permeance, and, in the case of homogeneous materials, 3 permeability. No other units of measurement are included in this standard. 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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ASTM D1434 (1982)

Services Liquid and Gas Permeation Testing Liquid and gas permeation testing is often performed on polymers, seals and other susceptible materials used in the oil and gas sector. Additional Liquid and Gas Permeation Services Our test capabilities include sweet and sour gas permeation testing, as well as liquid permeation testing and analysis of permeated gases and mixtures. For projects with more challenging requirements, our labs can use finite elemental analysis FEA to model fluid passage through more complex shapes and components. In addition to well-established industry standards, we can work with you to design and implement custom test plans, often integrating several polymer testing methods into a single test program. For more information about our service, or to request a quote, contact us today. Liquid and gas permeation Gas Permeation Gas permeation testing uses sweet and sour gases to evaluate coupon samples, hoses, tubes, pipes, o-rings and sealing elements.

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