Carbon dioxide gas transmission rate (CO₂TR) is an important determinant of the packaging protection afforded by barrier materials. It is not, however, the sole determinant, and additional tests, based on experience, must be used to correlate packaging performance with CO₂TR. It is suitable as a referee method of testing, provided that purchaser and seller have agreed on sampling procedures, standardization procedures, test conditions and acceptance criteria.

1. Scope

1.1 This method covers a procedure for determination of the steady-state rate of transmission of carbon dioxide gas through plastics in the form of film, sheeting, laminates, coextrusions, or plastic-coated papers or fabrics. It provides for the determination of (1) carbon dioxide gas transmission rate (CO₂TR), (2) the permeance of the film to carbon dioxide gas (PCO₂) , and (3) carbon dioxide permeability coefficient (P"CO₂) in the case of homogeneous materials.

1.2 This standard does not purport to address all of the safety concerns, 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

D1898 Practice for Sampling of Plastics

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

Keywords

ICS Code

ICS Number Code 71.100.20 (Gases for industrial application)

Citing ASTM Standards

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