ASTM D1434-82 PDF

Nera If you need to be able to add standards to the monitoring service, you must register as a user with your own username xstm password. This service is not available if you are a URL user where you do not log in with an email address. Historical Version s — view previous versions of standard. This test method provides for the determination of 1 gas transmission rate GTR2 permeance, and, in the case of homogeneous materials, 3 permeability.

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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. Interlaboratory testing has revealed that permeances measured by these procedures exhibit a strong dependence on the procedure being used, as well as on the laboratory performing the testing.

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.

Use of the permeability coefficient involving conversion of the gas transmission rate to a unit thickness basis is not recommended unless the thickness-to-transmission rate relationship is known from previous studies. 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 D1434:82(2009)e1

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. Interlaboratory testing has revealed that permeances measured by these procedures exhibit a strong dependence on the procedure being used, as well as on the laboratory performing the testing. Agreement with other methods is sometimes poor and may be material-dependent. The materials being tested often affect the between-laboratory precision.

GRADSTEIN RYZHIK PDF

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Taujin This service is not d if you are a URL user where you do not log in with an email address. Standards monitoring is a free service designed for you who wish to be alerted of changes to or new editions of the standards required in your work. The benefits of a subscription: Link to Active This link will always route to the current Active version of the standard. Read more about subscriptions. These tests do not include any provision for testing seals that may be involved in packaging applications. Correlation of measured values with any given use, such as packaged contents protection, e be determined by experience. The gas transmission rate is affected by conditions not specifically provided for in these tests, such as moisture content Note 2plasticizer content, and nonhomogeneities.

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