IEST RP-CC021.3 Testing HEPA and ULPA Filter Media

Recommended Practice by Institute of Environmental Sciences and Technology, 01/01/2010

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REPLACED 4/1/2016 by IEST RP-CC021.4: Testing HEPA and ULPA Filter Media

This document is no longer being maintained as an IEST Recommended Practice and is for historical reference only. It may contain outdated material and has been superseded by a new version or another Recommended Practice.

IEST RP-CC021.3 discusses test methods for physical and filtration properties of high-efficiency particulate air (HEPA) and ultra low penetration air (ULPA) filtration media. Applications of this document include acceptance criteria for test methods, test aerosol and particle size, and test face velocity. The RP details methods for testing resistance to airflow, ULPA filter media penetration, thickness, impact score tensile strength, and other tests.