1.1 这种做法可用于从新手套和旧手套、新湿巾和旧湿巾、软制品等材料中提取非挥发性和半挥发性残留物。当与提议的清洁材料（湿巾、手套等）一起使用时，此实践可用于确定提议的溶剂或其他流体提取污染物（增塑剂、残留洗涤剂、增白剂等）并将其沉积在被清洁表面上的潜力。 1.2 这种做法不适用于颗粒污染的评估。 1.3 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 1.4 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。 1.5 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 这种做法适用于测定可能在需要高清洁度的系统或部件（如氧气系统）中使用的材料中发现的可提取物质。 软性产品，如密封件和阀座，可在收到时进行测试。清洁操作中使用的手套和湿巾或其样品可在使用前进行评估，以确保拟议的提取剂不会在待清洁的表面上提取或沉积化学物质，或两者兼而有之。 5.2 擦拭布或其他清洁设备可以在使用后进行测试，以确定从表面去除的污染物的量。 注1: 提取的材料的量可以取决于超声波单元的频率和功率密度。 5.3 提取效率已被证明随超声波单元的频率和功率密度而变化。因此，必须仔细评估该装置，以优化提取条件。

1.1 This practice may be used to extract nonvolatile and semivolatile residues from materials such as new and used gloves, new and used wipes, component soft goods, and so forth. When used with proposed cleaning materials (wipes, gloves, and so forth), this practice may be used to determine the potential of the proposed solvent or other fluids to extract contaminants (plasticizers, residual detergents, brighteners, and so forth) and deposit them on the surface being cleaned. 1.2 This practice is not suitable for the evaluation of particulate contamination. 1.3 The values stated in SI units are to be regarded standard. No other units of measurement are included in this standard. 1.4 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. 1.5 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 This practice is suitable for the determination of extractable substances that may be found in materials used in systems or components requiring a high level of cleanliness, such as oxygen systems. Soft goods, such as seals and valve seats, may be tested as received. Gloves and wipes, or samples thereof, to be used in cleaning operations may be evaluated prior to use to ensure that the proposed extracting agent does not extract or deposit chemicals, or both, on the surface to be cleaned. 5.2 Wipes or other cleaning equipment may be tested after use to determine the amount of contaminant removed from a surface. Note 1: The amount of material extracted may be dependent upon the frequency and power density of the ultrasonic unit. 5.3 The extraction efficiency has been shown to vary with the frequency and power density of the ultrasonic unit. The unit, therefore, must be carefully evaluated to optimize the extraction conditions.