1.1 本试验方法涵盖了用于航天器组装、试验和加工的环境控制区非挥发性残留物（NVR）沉降物的测定。 1.2 感兴趣的NVR是在室温下沉积在取样板表面上的NVR:由用户推断在取样板表面上发现的NVR与在任何其他表面上发现的NVR之间的关系。 1.3 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 1.4 以SI单位表示的值将被视为标准值。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》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 5.1 通过该测试方法确定的NVR是可以合理预期存在于暴露于环境控制区域的硬件上的量。 5.2 在室温或接近室温下蒸发溶剂是为了定量在室温下存在的NVR。 5.3 许多其他方法被用于确定NVR。该测试方法不旨在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.