1.1 本试验方法涵盖了航天器组装、测试和加工所用环境控制区域内非挥发性残留物（NVR）沉降物的测定。 1.2 感兴趣的NVR是室温下沉积在采样板表面的NVR:由用户推断采样板表面上的NVR与任何其他表面上的NVR之间的关系。 1.3 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。 1.4 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 通过该测试方法确定的NVR是可以合理预期暴露在环境控制区域的硬件上存在的量。 5.2 溶剂在室温或室温附近的蒸发是为了量化室温下存在的NVR。 5.3 许多其他方法正在用于确定NVR。本试验方法无意取代用于其他应用的方法。

1.1 This test method covers the determination of nonvolatile residue (NVR) fallout in environmentally controlled areas used for the assembly, testing, and processing of spacecraft. 1.2 The NVR of interest is that which is deposited on sampling plate surfaces at room temperature: it is left to the user to infer the relationship between the NVR found on the sampling plate surface and that found on any other surfaces. 1.3 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. 1.4 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 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 NVR determined by this test method is that amount that can reasonably be expected to exist on hardware exposed in environmentally controlled areas. 5.2 The evaporation of the solvent at or near room temperature is to quantify the NVR that exists at room temperature. 5.3 Numerous other methods are being used to determine NVR. This test method is not intended to replace methods used for other applications.