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（O 2. 全球技术法规）( 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O的唯一方法 2. 全球技术法规。可能还有其他方法 2. 使用其他氧传感器和程序的全球技术法规确定。 1.3 本试验方法旨在允许使用各种传感器、装置和程序。需要单独确定每个设计的精度和偏差，以确定该仪器或方法的适用性，以满足用户的需求。 1.4 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。 1.5 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、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 O 2. GTR是屏障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的测试，以将包装性能与O 2. 全球技术法规。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。 5.2 将选定仪器与其他传感器与测试方法中具体描述的仪器进行比较的测试 D3985 如第节所示 16 ，精度和偏差。 5.3 该方法的精度和偏差部分显示了使用带有非库仑和库仑传感器的几种仪器的结果。

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 (O 2 GTR), ( 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 O 2 GTR. There may be other methods of O 2 GTR determination that use other oxygen sensors and procedures. 1.3 This test method has intentionally been prepared to allow for the use of various sensors, devices, and procedures. The precision and bias of each design needs to be individually established to determine the applicability of that instrument or method to meet the needs of the user. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 The O 2 GTR 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 O 2 GTR. 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. 5.2 Testing which has compared select instruments with other sensors to the instruments specifically described in Test Method D3985 is shown in Section 16 , Precision and Bias, of this method. 5.3 The Precision and Bias section of this method shows results using several instruments with non-coulometric and coulometric sensors.