ISO 29463-4:2011规定了“扫描法”的测试程序，该方法被视为确定滤芯泄漏的参考方法。它适用于ISO 35 H至ISO 75 U级的过滤器。ISO 29463-4:2011还描述了其他规范性方法:油螺纹泄漏试验和光度计泄漏试验，适用于ISO 35 H至ISO 45 H级HEPA过滤器，以及固体PSL气溶胶泄漏试验。ISO 29463-4:2011旨在与ISO 29463-1、ISO 29463-2、ISO 29463-3和ISO 29463-5一起使用。

ISO 29463-4:2011 specifies the test procedure of the "scan method", considered to be the reference method, for determining the leakage of filter elements. It is applicable to filters ranging from classes ISO 35 H to ISO 75 U. ISO 29463-4:2011 also describes the other normative methods: the oil thread leak test and the photometer leak test, applicable to classes ISO 35 H to ISO 45 H HEPA filters, and the leak test with solid PSL aerosol. ISO 29463-4:2011 is intended for use in conjunction with ISO 29463-1, ISO 29463-2, ISO 29463-3 and ISO 29463-5.