1.1 该测试方法基于毛细管流测试，该测试测量迫使气泡通过在已知表面张力的测试液体下润湿的工业编织丝网滤布扁平试样所需的压力。作为一种既定的物理现象，压力与孔径成反比。该测试方法详细说明了确定泡点压力的方法，以及计算标准压力的适用变量。建议对最小试验压力为1.0英寸水的滤布进行试验。 1.2 提供了一种确定孔径计算因子（CF）的方法，以允许根据合成压力计算孔径（参见 15.2 ). 1.3 本试验方法使用混合测量单位。对于泡点压力、测试夹具和程序，以英寸-磅为单位的数值应视为标准值。以国际单位制表示的数值应视为试验流体性质和孔径的标准值。 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、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（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 规范涵盖的工业用编织丝滤布的用户 E2814 通常希望通过将泡点测试的压力结果转换为以微米（也称为微米）为单位的绝对过滤额定值来指定最大孔径。 该测试方法需要一种全面的泡点测试方法以及有效的弯曲度或转换系数进行计算。该孔径结果可用作材料规范的标准评级、所供应材料的性能评估或验收标准，或1 圣 织物织造过程中的物品检验要求。该试验使用从编织布卷上切下的样品材料进行，因此，鉴于应用了适当的公差，应指示制造批次。 5.2 虽然一些用户可能希望在一些成品、制造的过滤装置上进行泡点测试，但此类测试的测试条件不在本测试方法的范围内。此类试样的几何测试参数必须得到用户和生产商的明确同意，并被视为一种自定义测试方法。

1.1 This test method is based on a capillary flow test that measures the pressure required to force an air bubble through a flat specimen of industrial woven wire filter cloth wetted under a test liquid of known surface tension. An established physical phenomenon, the pressure is inversely proportional to the pore size. This test method details the methodology to determine the bubble point pressure, and the applicable variables to calculate a standardized pressure. The test is recommended for filter cloth with a minimum test pressure of 1.0 inches of water. 1.2 A means for determining a pore size calculation factor (CF) is provided to allow the calculation of a pore size from the resultant pressure (see 15.2 ). 1.3 This test method uses mixed unit of measures. The values stated in inch-pound units shall be considered standard with regard to the bubble point pressure, test fixture, and procedures. The values stated in SI units shall be considered standard for the test fluid properties and pore size. 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 Users of industrial woven wire filter cloth as covered by Specification E2814 commonly desire to specify the largest pore size as determined by converting the pressure result of a bubble point test to an absolute filtration rating in micrometres (also known as microns). This test method requires a comprehensive bubble point test method as well as a valid tortuosity or conversion factor for the calculation. This pore size result may be used as a standard rating of a material specification, a performance evaluation or acceptance criteria for material supplied, or a 1 st article inspection requirement during the weaving of the cloth. The test is conducted using sample material cut from a woven roll of cloth, and hence should be indicative of the manufactured lot, given the application of appropriate tolerances. 5.2 While some users may desire a bubble point test conducted on some finished, fabricated filter unit, the test conditions for this type of test are outside the scope of this test method. The geometric test parameters for this type of specimen must be explicitly agreed to by the user and producer, and is to be considered a custom test method.