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New IEST-RP-CC034.2 HEPA and ULPA Filter Leak Test document has been released!

As an very active participant in the IEST Working Group 034, Micro-Clean is proud to announce that the new IEST-RP-CC034.2 "HEPA and ULPA Filter Leak Tests" has been released for publication. This Recommended Practice is published by the Institute of Environmental Sciences and Technology to advance engineering and technical sciences relating to Contamination Control.

This document gives comprehensive and detailed descriptions on high efficiency (>99.97% ) filter leak testing methods with "real world" scenarios and discusses problems related to filter integrity testing in field applications. This document is "required reading" for pharmaceutical and biotechnology organizations, especially quality assurance and regulatory compliance, facilities managers, production managers, cleanroom designers, and purchasing personnel specifying technical requirements for filters.

To obtain a copy of this document, go to www.iest.org.

One new area of this document is a discussion on filter "BLEED THROUGH". This is one of the first industry documents to address this issue. Bleed through is an overall penetration (~0.003% to > 0.010%) detected across the filter media that is usually due to a mis-match in Factory Efficiency Test vs. Field Integrity Test. In general terms, the factory efficiency test was not as stringent as the field leak test.

If you have questions about leak testing or "bleed through", current and potential customers of Micro-Clean are invited to contact their Micro-Clean technical representatives or email us for more information at micro-clean@microcln.com.

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