Ensuring Filter Integrity: An Overview of Filter Integrity Testing
Producers of high-efficiency particulate air (HEPA) filters designed for cleanrooms and controlled environments conduct assessments of their products’ particle removal efficiency. Similarly, upon installation at the user’s production site, it is essential to promptly execute a test to validate both the filter’s integrity and the installation. Generally, HEPA filters are capable of capturing as much as 99.97% of particles as small as 0.3 microns. The dispersed oil particulate (DOP) scan testing or PAO(Poly Alpha Olefin) scan testing also known as filter integrity testing, or leak testing, is one of the most quoted methods by industry standards. The test is recommended …
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