IEST RP-CC034.3 PDF Download


HEPA and ULPA Filter Leak Tests
Recommended Practice by Institute of Environmental Sciences and Technology, 10/01/2009

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REPLACED 4/1/2016 by IEST RP-CC034.4: HEPA and ULPA Filter Leak Tests

This document is no longer being maintained as an IEST Recommended Practice and is for historical reference only. It may contain outdated material and has been superseded by a new version or another Recommended Practice.


This RP covers definitions, equipment, and procedures for leak-testing HEPA and ULPA filters in the factory as they are produced, at the job site before they are installed, and after they are installed in cleanrooms and in unidirectional-flow, clean-air devices. When used in conjunction with other RPs, including IEST-RP-CC001, IEST-RP-CC002, IEST-RP-CC006, IEST-RP-CC007, IEST-RP-CC021, and IEST-RP-CC028, This RP may be used to define the basis of an agreement between customer and supplier in the specification and procurement of HEPA and ULPA filters, and in the testing of unidirectional-flow, clean-air devices and cleanrooms.

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