DANSK DS/EN ISO 29463-4:2018 用于去除空气中颗粒的高效过滤器和过滤介质 第4部分:确定过滤元件泄漏的测试方法 扫描方法(ISO 29463-4:2011)
High-efficiency filters and filter media for removing particles in air – Part 4: Test method for determining leakage of filter elements – Scan method (ISO 29463-4:2011)