1.1 本试验方法涵盖了在特定暴露条件下测定热塑性容器对包装试剂或专有产品渗透性的程序。所使用的暴露旨在模拟最终使用应用中可能遇到的正常和高温储存条件。 1.2 本试验方法仅适用于那些设计为允许正密封的容器。 1.3 提供了两个程序: 1.3.1 程序A 专用于仅使用标准设计容器进行测试。该程序提供了重量损失（或增加）速率的测定和渗透系数的计算。 1.3.2 程序B 适用于所有其他容器设计的测试。该程序的渗透率数据仅以测试的特定容器的重量损失（或增加）率表示。 1.4 单位-- 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值不一定是完全相等的；因此，每个系统应独立使用。将两个系统的值组合在一起有可能导致不符合标准。 注1: 目前还没有与该标准等效的ISO。 1.5 本标准并不旨在解决与其使用相关的所有安全问题（如有）。 本标准的使用者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》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 通过适当的预防措施和背景经验，结果可用于估计货架储存期间包装产品通过容器壁的损失。 该测试也有助于隔离容器设计和材料的影响，并适用于开发和研究以及规范目的。 5.2 在缺乏足够的支持数据的情况下，由于可能的产品变化、溶解能力或对塑料的化学影响等原因，不建议将结果外推或与测试以外的条件相关。 5.3 在继续使用此测试方法之前，请参阅所测试材料的规范。材料规范中涵盖的任何试样制备、处理、尺寸或试验参数，或其组合，应优先于本试验方法中提及的试样。 如果没有材料规范，则应用默认条件。

1.1 This test method covers procedures for determining the permeability of thermoplastic containers to packaged reagents or proprietary products under specified conditions of exposure. The exposures used are intended to simulate the normal and elevated temperature-storage conditions that might be encountered in end-use application. 1.2 This test method is applicable only to those types of containers designed to allow positive, leakproof closure. 1.3 Two procedures are provided: 1.3.1 Procedure A is specific to testing only with a standard design container. This procedure provides for determinations of rate of weight loss (or gain) and for calculation of a permeability factor. 1.3.2 Procedure B applies to tests of all other container designs. Permeability data by this procedure are expressed only in terms of rate of weight loss (or gain) for the particular container tested. 1.4 Units— The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems has the potential to result in non-conformance with the standard. Note 1: There is no known ISO equivalent to 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 With the proper precautions and background experience, results can be useful for estimation of the loss of a packaged product through the walls of a container during shelf storage. The test is also useful for isolating the effects of a container design and materials, and is applicable for development and research and for specification purposes. 5.2 In the absence of adequate supporting data, extrapolations or correlations of results to conditions beyond those of the test are not recommended because of possible product alteration, solvency, or chemical effects on the plastic, etc. 5.3 Before proceeding with this test method, refer to the specification of the material being tested. Any test specimen preparation, conditioning, dimensions, or testing parameters, or combination thereof, covered in the materials specification shall take precedence over those mentioned in this test method. If there are no material specifications, then the default conditions apply.