In the world of filtration, we differentiate filters and measure their performance using various testing methods, otherwise known as multi-pass testing. In order to understand the testing process, we've created two videos that cover how filters are tested. In the video below, we'll cover four different methods of testing: ISO 16889, which is the industry standard test; ISO/CD 23369 Cyclic Flow Test, which is proposed to replace the current industry standard test; The Cyclic Stabilization Test; and Hy-Pro’s Dynamic Filter Efficiency Test.

In the world of filtration, we differentiate filters and measure their performance using various testing methods, otherwise known as multi-pass testing. In order to understand the testing process, we've created two videos that cover how filters are tested. In the first video below, we'll go over the terms and definitions you need to know to understand how multi-pass testing works and what's measured by it.