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Significance and Use
5.1 Carbon dioxide gas transmission rate (CO2 TR) 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.
1.1 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 (P’CO2) , 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.
ICS Number Code 71.100.20 (Gases for industrial application)
UNSPSC Code 30265802(Plastic sheet); 46111702(Infrared IR detectors)
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ASTM F2476-13, Standard Test Method for the Determination of Carbon Dioxide Gas Transmission Rate (CO2TR) Through Barrier Materials Using An Infrared Detector, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top