1.1 本试验方法描述了比较荧光染料渗透工艺中使用的渗透剂亮度的技术。这种比较是在控制条件下进行的，该控制条件消除了实际渗透检测中存在的大多数变量。因此，亮度因子是孤立的，并且是独立于影响渗透剂系统性能的其他因素来测量的。 1.2 渗透剂指示的亮度受所用显影剂的影响。然而，这种测试方法测量方便的滤纸基底上渗透剂的亮度，滤纸基底可以代替显影剂。 1.3 对所获得的亮度测量值进行颜色校正，以近似于普通人眼的颜色响应。由于大多数检查都是用人眼进行的，所以这个数字比以发射能量为单位的测量更有实际价值。 此外，由于目前不存在绝对的测量系统，因此比较以某些选定标准渗透剂的百分比表示。 1.4 当根据该技术进行测试时，本标准进行的测量将候选渗透剂的亮度与标准渗透剂的颜色进行比较。所获得的结果与在检查中使用渗透剂获得的实际缺陷显示的亮度之间没有已知的相关性。 1.5 本标准并不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。 1.6 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 该程序的主要用途是将各批次荧光渗透剂的亮度与指定标准进行比较，作为批次质量控制测试。 5.2 该程序还用于监测使用中渗透剂的亮度与相同材料的未使用样品的亮度。 5.3 结果的意义不是绝对值，而是特定实验室或操作员在特定荧光计上某个时间点的相对比较。

1.1 This test method describes the techniques for comparing the brightness of the penetrants used in the fluorescent dye penetrant process. This comparison is performed under controlled conditions that eliminate most of the variables present in actual penetrant examination. Thus, the brightness factor is isolated and is measured independently of the other factors which affect the performance of a penetrant system. 1.2 The brightness of a penetrant indication is affected by the developer with which it is used. This test method, however, measures the brightness of a penetrant on a convenient filter paper substrate which serves as a substitute for the developer. 1.3 The brightness measurement obtained is color-corrected to approximate the color response of the average human eye. Since most examinations are done by human eyes, this number has more practical value than a measurement in units of energy emitted. Also, the comparisons are expressed as a percentage of some chosen standard penetrant because no absolute system of measurement exists at this time. 1.4 The measurements made by this standard compare the brightness of a candidate penetrant to that of a standard penetrant when tested according to the technique. There is no known correlation between the results obtained and the brightness of actual flaw indications obtained using the penetrant in inspection. 1.5 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. 1.6 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 principle use of this procedure is for the comparison of the brightness between batches of fluorescent penetrants compared to a specified standard, as a batch quality control test. 5.2 The procedure is also utilized in monitoring the brightness of an in-use penetrant against the brightness of the unused sample of the same material. 5.3 The significance of the results are not absolute values but rather relative comparisons at a point in time, by a particular laboratory or operator on the specified fluorometer.