The Institute of Environmental Sciences and Technology (IEST) announces new revisions toIEST-RP-CC001.7: HEPA and ULPA Filters.The updated Recommended Practice covers basic provision for high-efficiency particulate air (HEPA) and ultralow-penetration air (ULPA) filter units as a basis for agreements between customers and suppliers.
HEPA and ULPA filters that meet the requirements of this Recommended Practice are suitable to use in clean air devices and cleanrooms that fall within the scope of ISO 14644 and to use in supply air and contaminated exhaust systems that require extremely high filter efficiency for submicrometer particles. This document describes 11 levels of filter performance and six grades of filter construction.
Updates to IEST-RP-CC001 include:
An appendix with a draft of an alternate filter classification scheme related to consistent filter efficiency
An appendix with guidelines for testing filter sizes with a high aspect ratio
An appendix describing the operation and results of a low-output "thermal" aerosol generator for testing filters
Text on the testing of filters made with ePTFE or charged media
Table D2 edited for improved clarity
Cautionary notes on the use of solid aerosol challenge
IEST-RP-CC001.7 is now published and ready for purchase. Your purchases will continue to support the publication of new and revised cleanroom guidelines, and sustain the nonprofit mission of IEST.
IEST members receive discounts of up to 35% off bookstore retail prices
If you purchase this Recommended Practice, you may also be interested in other IEST industry guidelines, developed through the collaboration of leading industry experts, like IEST-RP-CC002, IEST-RP-CC006, IEST-RP-CC007, IEST-RP-CC021 and IEST-RP-CC028.
IEST - Institute of Environmental Sciences and Technology
