VAC-V1 is applicable to the determination of gas permeability rate, solubility coefficient, diffusion coefficient and permeability coefficient at various temperature of plastic films, laminated films, sheeting, foils and finished packages, etc. VAC-V2 can be used to measure gas permeability rate, solubility coefficient, diffusion coefficient and permeability coefficient at various temperature of plastic films, laminated films, high barrier material, sheets, foils, etc. VAC-VBS is based on the differential pressure method, and can be used for determination of gas transmission rate of films, sheeting, high barrier materials and aluminum foils. Need help or have a question?
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This test method provides for the determination of 1 gas transmission rate GTR , 2 permeance, and, in the case of homogeneous materials, 3 permeability. Procedure V —Volumetric.
The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. This standard does not purport to address all of the safety concerns, if any, associated with its use.
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Historical Version s - view previous versions of standard. 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.