1.1 本试验方法测量防护服试样在连续接触液体时的阻隔效果。 1.1.1 程序A- 当需要1小时内渗透的化学品累积量值时使用。 1.1.2 程序B- 当需要突破检测时间和渗透速率值时使用。 1.2 尽管本文未提及，但可通过比较渗透试验前后试样的重量或其他物理性质来确定试验化学品对服装材料的影响。 1.3 以国际单位制表示的数值应视为标准值。括号中给出的值是英寸-磅单位的数学转换，仅供参考，不被视为标准值。 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）。 本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 第节给出了具体的预防说明 7. . 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 本试验方法建立了快速（在1小时或更短时间内）测定防护服材料试样耐化学性的标准程序。本试验方法可用于对材料进行排序，以确定其是否适合与已知或未知成分的液体一起使用。 5.2 突破检测时间、渗透速率或累积渗透可用于识别更可能限制潜在化学品暴露的防护服材料。更长的穿透检测时间和较低的累积渗透量和渗透速率是材料更好地阻挡测试化学品的特征。 5.3 一般来说，该试验方法不如试验方法敏感 F739 加上灵敏的分析程序。如果所关注的化学品具有剧毒性，即使极少量接触皮肤也可能对健康有害，则不建议使用渗透杯法。使用测试方法 F739 . 5.4 渗透衣物材料后，化学品必须蒸发，以便发生重量损失并检测渗透。 因此，试验方法可能不适用于挥发性低（即蒸汽压）的化学品。尚未确定本试验方法不适用的蒸汽压。 5.4.1 第节描述了评估波动性的程序 10 . 5.5 该试验方法的结果高度依赖于试验温度。如果目的是比较不同的服装材料，则所有试验应在相同的温度（±3）下进行 °C）。

1.1 This test method measures the barrier effectiveness of a specimen of protective clothing upon continuous contact with a liquid. 1.1.1 Procedure A— For use when a value for the cumulative amount of chemical permeated in 1 h is desired. 1.1.2 Procedure B— For use when breakthrough detection time and permeation rate values are desired. 1.2 Although not addressed herein, the effect of the test chemical on the clothing material can be determined by comparing the weight or other physical properties of the specimen before and after the permeation test. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered 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 and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 7 . 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 test method establishes a standard procedure for rapidly (in 1 h or less) determining the chemical resistance of specimens of protective clothing materials. This test method can be used to rank materials as to their suitability for use with liquids of known or unknown composition. 5.2 The breakthrough detection time, permeation rate, or cumulative permeation can be used to identify protective clothing materials that are more likely to limit potential exposures to chemicals. Longer breakthrough detection times and lower cumulative amounts permeated and permeation rates are characteristics of materials that are better barriers to the test chemical. 5.3 In general this test method is less sensitive than Test Method F739 coupled with sensitive analytical procedures. In cases where the chemical of concern is highly toxic and contact of even a very small amount with the skin may be detrimental to health, the permeation cup method is not recommended. Use Test Method F739 . 5.4 Upon permeating the clothing material, the chemical must evaporate in order for a weight loss to occur and permeation to be detected. Consequently, the test method may not be applicable for chemicals having low volatility (that is, vapor pressure). The vapor pressure below which this test method is not applicable has not been determined. 5.4.1 A procedure for assessing volatility is described in Section 10 . 5.5 The results of this test method are highly dependent on the test temperature. If the objective is to compare different clothing materials, all tests shall be conducted at the same temperature (±3 °C).