1.1本试验方法涵盖了测定氧气通过薄膜、薄片、层压板、共挤物或塑料涂层纸或织物形式的塑料的稳态传输速率的程序。它规定了( 1. )氧气传输速率（OTR）( 2. )薄膜对氧气的渗透率（PO 2. )，和( 3. )透氧系数（P'O 2. )对于均质材料。 1.2本试验方法并非测量OTR的唯一方法。可能存在使用其他氧传感器和程序的其他OTR测定方法。 1.3以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== OTR是阻隔材料提供的包装保护的重要决定因素。然而，这不是唯一的决定因素，必须根据经验进行额外测试，以将包装性能与OTR关联起来。如果买方和卖方已就抽样程序、标准化程序、测试条件和验收标准达成一致，则该方法适合作为测试的参考方法。 与测试方法相关的有限统计数据 D1434 方法可用；然而，NIST通过压力测量法测定的标准参考材料（见12.1）的透氧率与使用同一制造批次材料进行库仑实验室间试验获得的值非常一致。因此，本试验方法可用作参考方法。

1.1 This test method covers a procedure for determination of the steady-state rate of transmission of oxygen gas through plastics in the form of film, sheeting, laminates, coextrusions, or plastic-coated papers or fabrics. It provides for the determination of ( 1 ) oxygen gas transmission rate (OTR), ( 2 ) the permeance of the film to oxygen gas (PO 2 ), and ( 3 ) oxygen permeability coefficient (P'O 2 ) in the case of homogeneous materials. 1.2 This test method does not purport to be the only method for measurement of OTR. There may be other methods of OTR determination that use other oxygen sensors and procedures. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety problems, 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. ====== Significance And Use ====== The OTR 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 OTR. It is suitable as a referee method of testing, provided that the purchaser and the seller have agreed on sampling procedures, standardization procedures, test conditions, and acceptance criteria. Limited statistical data on correlations with Test Method D1434 methods are available;however, the oxygen transmission rate of a standard reference material (see 12.1) as determined manometrically by NIST, is in good agreement with the values obtained in the coulometric interlaboratory test using material from the same manufacturing lot. Thus, this test method may be used as a referee method.