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. Terminology 3.

Author:Gulkis Gardakinos
Country:Turkmenistan
Language:English (Spanish)
Genre:Relationship
Published (Last):26 May 2005
Pages:202
PDF File Size:14.32 Mb
ePub File Size:18.76 Mb
ISBN:724-5-25032-324-6
Downloads:83875
Price:Free* [*Free Regsitration Required]
Uploader:Kazizilkree



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.

Terminology 3. Current edition approved July 30, Published November Originally published as D — 56 T. Last previous edition D — The test conditions see 5. The permeability is meaningful only for homogeneous materials, in which it is a property characteristic of the bulk material.

The test conditions see 3. GTR in SI units is obtained by multiplying the value in inch-pound units by 5. Additional units and conversions are shown in Appendix X1. Summary of Test Method 4. Either of the following procedures is used: 4. 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.

Test Specimen 6. Maximum, minimum, and average values should be recorded. An alternative measure of thickness involving the weighing of a known area of specimens having a known density is also suitable for homogeneous materials.

Conditioning 7. Sampling 8. Practice D provides guidelines for deciding what procedures to use in sampling a batch of FIG.

Enough specimens must be tested to ensure that the information obtained is representative of the batch or other lot size being tested. Apparatus 9. The solid adapter provides a minimum void volume for slow transmis- sion rates. The hollow adapter increases the void volume by about a factor of eight for faster transmission rates. Used for measuring upstream gas pressure. IPS manufactured by G. Dahl Co.

DACRIOCISTITIS CRONICA PDF

Liquid and Gas Permeation Testing

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.

LADLI YOJANA FORM PDF

ASTM Testing

.

Related Articles