1.1 本试验方法测量防护服或防护套抵抗以表面活性剂处理水的淋浴喷雾形式的液体渗透的能力。 1.2 本试验方法测量整体防护服或防护服的结构和配置的抗液体渗透性，尤其是接缝、封口和与其他部件（如手套、靴子、兜帽和呼吸防护设备）的接口。本试验方法旨在评估从制造商处收到并按照其说明穿戴的防护服和防护套的抗液体渗透性。 1.3 防护服中所用材料的抗渗透性可根据试验方法确定 F739 （或试验方法 F1383 或 F1407 )和试验方法 F903 分别地或者，可根据试验方法测定防护服中所用材料对合成血液或含病毒液体渗透的耐受性 F1670/F1670M 和 F1671/F1671M . 1.4 蒸汽保护装置的完整性是通过其保持正内压的能力来测量的 F1052 . 1.5 以国际单位或其他单位表示的数值应单独视为标准。每个系统中规定的值必须独立于其他系统使用，不得以任何方式组合值。 1.6 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。 1.7 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====== 5.1 本试验方法评估防护服或防护套的结构和配置抵抗液体渗透的能力。在大多数情况下，本试验方法中使用的条件不代表实际终点- 使用条件。 5.2 两种不同的喷雾配置用于暴露假人上的防护服或防护套装。 5.2.1 程序A涉及五个淋浴喷头，其中一个喷头直接位于穿着的人体模型上方，两个喷头分别位于人体模型的上下侧，所有喷头均位于同一垂直面上。该喷雾配置旨在提供整个防护服或防护套装系统的完全暴露。 5.2.2 程序B涉及三个淋浴喷头，它们位于与假人平行的垂直线上的不同高度，每个喷头的位置和方向相对于假人上的目标设置。这种喷雾配置旨在直接评估服装特征，如前盖。 5.3 选定的测试持续时间不是为了模拟用户暴露在液体物质飞溅物中，而是为了提供足够的时间让足够的液体渗透，以便于视觉检测。程序A的默认液体暴露时间为20分钟。程序B的默认液体暴露时间为10分钟。 5.3.1 允许指定较短的试验持续时间。建议每个假人方向的暴露时间相同。 5.3.2 不同测试持续时间的选择部分取决于被测试样本中的层数，其中一些层数用于吸收经表面活性剂处理的测试液体，并降低液体对样本的挑战程度。 5.4 在本试验方法中，向水中添加无毒、无泡沫的表面活性剂，以模拟表面张力较低的液体。可以通过处理水来模拟特定感兴趣的液体，以获得等效的表面张力。 5.5 对于具有拒水表面的防护服，较低的表面张力液体将有助于评估服装的结构和配置，因为它不太可能被拒，更可能弄湿防护服。这对于可重复使用的衣服尤其有用，因为这些衣服的拒水表面在新的时候会干扰对其结构和配置的评估，但在穿着和洗涤后会减弱。 5.6 允许向水中添加荧光或有色染料，以增强对液体渗透防护服或防护服的检测。 5.7 制造商和最终用户均可使用该测试方法来评估液体渗透阻力。制造商可以使用此测试方法来评估服装和整体配置的构造质量和有效性。 5.8 衣服或套装的尺寸适合人体模型。选择适合人体模型的衣服很重要，因为检测液体渗透需要衣服或整体与内部液体吸收服装之间尽可能多的接触。 5.9 服装或整体尺寸不匹配的结果不得用于概括特定结构或配置。人体模型拟合可能会影响液体渗透阻力的测定。 5.10 对于可以用本试验方法评估的防护服或防护套的类型，没有已知的限制。 5.11 在某些情况下，由于材料降解、渗透或渗透或与液体化学品蒸汽相关的影响，在本试验方法期间未显示液体渗透的防护服或防护服仍无法保护佩戴者免受特定液体的影响。 5.12 在某些情况下，在本试验方法期间未显示液体渗透的防护服或防护套将无法在特定情况下保护佩戴者，例如洪水或浸水。

1.1 This test method measures the ability of protective clothing or protective ensembles to resist liquid penetration in the form of a shower spray with surfactant-treated water. 1.2 This test method measures the liquid penetration resistance of the construction and configuration of the overall protective clothing or protective ensemble, but especially of seams, closures, and interfaces with other components such as gloves, boots, hoods, and respiratory protective equipment. It is intended that this test method be used to assess the liquid penetration resistance of protective clothing and protective ensembles as received from the manufacturer and worn in accordance with their instructions. 1.3 Resistance of materials used in protective clothing to permeation or penetration can be determined in accordance with Test Method F739 (or Test Method F1383 or F1407 ) and Test Method F903 , respectively. Alternatively, resistance of materials used in protective clothing to penetration by synthetic blood or liquids containing virus can be determined in accordance with Test Methods F1670/F1670M and F1671/F1671M . 1.4 The integrity of vapor protective ensembles is measured by its ability to maintain positive internal pressure with Test Method F1052 . 1.5 The values in SI units or in other units shall be regarded separately as standard. The values stated in each system must be used independently of the other, without combining values in any way. 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 ====== 5.1 This test method evaluates the ability of the construction and configuration of protective clothing or protective ensembles to resist liquid penetration. In most cases, the conditions used in this test method will not represent actual end-use conditions. 5.2 Two different spray configurations are used for exposing the protective clothing or protective ensemble on a manikin. 5.2.1 Procedure A involves five shower nozzles, with one nozzle directly above the clothed manikin and two nozzles each to upper and lower sides of the manikin that are all positioned in the same vertical plane. This spray configuration is intended to provide a full exposure of the entire protective clothing or protective ensemble system. 5.2.2 Procedure B involves three shower nozzles that are positioned at different heights on a vertical line that is parallel to the manikin with the locations and direction of each nozzle set with respect to targets on the manikin. This spray configuration is intended to provide a direct assessment of garment features such as the front closure. 5.3 The selected duration of the test is not intended to simulate user exposure to splashes of liquid substances but rather to provide sufficient time for enough liquid to penetrate to make visual detection easier. The default liquid exposure time for Procedure A is 20 min. The default liquid exposure time for Procedure B is 10 min. 5.3.1 It is permissible to specify shorter test durations. It is recommended that the duration of exposure be the same in each manikin orientation. 5.3.2 The choice of different test duration is partly based on the number of layers in the specimen being tested, some of which serve to absorb the surfactant-treated test liquid and result in attenuating the severity of the liquid challenge to the specimen. 5.4 A nontoxic, non-foaming surfactant is added to water for this test method to simulate liquids of lower surface tensions. Liquids of specific interest can be simulated by treating water to achieve an equivalent surface tension. 5.5 For protective clothing with water-repellent surfaces, the lower surface tension liquid will aid in the evaluation of the construction and configuration of the garment because it is less likely to be repelled and more likely to wet the protective clothing. This is especially useful for reusable garments whose water-repellent surface interferes with the evaluation of their construction and configuration when new, but is diminished after wearing and washing. 5.6 Fluorescent or colored dyes are permitted to be added to the water to enhance detection of liquid penetration into the protective clothing or protective ensemble. 5.7 This test method can be used by both manufacturers and end users to assess liquid penetration resistance. Manufacturers can use this test method to evaluate quality of construction and effectiveness of clothing and ensemble configurations. 5.8 The clothing or ensemble is sized to fit the manikin. It is important that the clothing be selected to fit the manikin well since detection of liquid penetration requires as much contact as possible between the clothing or ensemble and the inner liquid-absorptive garment. 5.9 Results on a mismatched size of clothing or ensemble shall not be used to generalize about a particular construction or configuration. Manikin fit potentially affects liquid penetration resistance determinations. 5.10 There are no known restrictions to the types of protective clothing or protective ensembles that can be evaluated with this test method. 5.11 In some cases protective clothing or protective ensembles that show no liquid penetration during this test method will still fail to protect wearers against specific liquids due to the material degradation, penetration, or permeation or the effects associated with the vapors of liquid chemicals. 5.12 In some cases protective clothing or protective ensembles that show no liquid penetration during this test method will fail to protect wearers in specific circumstances as, for example, deluge or immersion.