1.1 这些试验方法包括测定散装运输集装箱的水蒸气传输率，如下所示: 1.1.1 方法A，适用于可密封容器，以及 1.1.2 方法B，适用于未设计用于重合闸的容器。 1.2 在每个程序中，给出了试验大气的恒定和循环方法的详细信息。 1.3 该试验可应用于包装好的容器，或在一次或多次性能试验后，如滚筒（方法 D782型 )，振动（方法 1999年12月 )，下降（测试方法 D5276号 )，抗冲击性（试验方法 D880型 , D4003型 和 D5277号 )或性能测试（实践 D4169天 )，根据需要。 1.4 对于称重精度要求更高的小型运输集装箱，可根据试验方法测定水蒸气透过率 D895天 或试验方法 第1251页 . 1.5 以英寸表示的值- 英镑单位将被视为标准单位。括号中给出的值是数学转换为SI单位，仅供参考，不被视为标准单位。 1.6 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。 1.7 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====== 4.1 这些试验方法通常用于以下目的: 4.1.1 要评估特定类型容器的材料和结构， 4.1.2 为了比较不同类型容器的性能， 4.1.3 确定特定产品或应用的充分保护，以及 4.1.4 保持质量控制。

1.1 These test methods cover the determination of water vapor transmission rates for bulk shipping containers, as follows: 1.1.1 Method A, for Reclosable Containers, and 1.1.2 Method B, for Containers Not Designed for Reclosing. 1.2 Within each procedure details are given for the constant and cycle methods of test atmosphere. 1.3 The test may be applied to the container as packed, or after one or more performance tests such as drum (Method D782 ), vibration (Methods D999 ), drop (Test Method D5276 ), impact resistance (Test Methods D880 , D4003 , and D5277 ), or performance tests (Practice D4169 ), as required. 1.4 For small shipping containers requiring greater accuracy in weighing, the water vapor transmission may be determined in accordance with Test Method D895 or Test Method D1251 . 1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.6 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. 1.7 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 ====== 4.1 These test methods are normally used for the following purposes: 4.1.1 To evaluate materials and constructions for a specific type of container, 4.1.2 To compare performance of different types of containers, 4.1.3 To determine adequacy of protection for a specific product or application, and 4.1.4 To maintain quality control.