Updated IEST Recommended Practice for HEPA and UPLA Filter Leak Tests: Order Your Copy

IEST announces new revisions to IEST-RP-CC034: HEPA and ULPA Filter Leak Tests. The updated Recommended Practice covers definitions, equipment and procedures for leak-testing high-efficiency particulate air (HEPA) filters and ultralow-penetration air (ULPA) filters in the factory as they are produced, at the job site before installation and after installment in cleanrooms and in unidirectional-flow, clean-air devices. The RP also includes procedures for measuring the uniformity of the aerosol challenge approaching the filter under test.

Updates to IEST-RP-CC034 include: new content on best practices for sample tube length and expanded content on total leakage test, spatial uniformity acceptance, circular vs. rectangular probe heads and considerations in sample port location.

IEST-RP-CC034.5 is now published and ready for purchase. Access your copy: $315.25 for IEST members, $485 for non-members.

Order your copy
Training & Conferences
RAMS 2023 Registration Open
Attend the 69th Annual Reliability & Maintainability Symposium, "The Digital Transformation of R&M," January 23-26, 2023, Orlando, Florida

Combining tutorials, presentations, CEUs, certifications, and networking into one week-long program, RAMS delivers cutting-edge information to all technical industries. IEST is a sponsoring organization of the conference, which focuses on providing real-world value for commercial and government applications through succinct delivery of the latest techniques and business practices.

What is RAMS? RAMS provides a venue for professionals new to reliability and maintainability engineering disciplines to receive a first-class introduction to the fundamental concepts and tools of assurance science. 
4 reasons to attend RAMS:
  1. EXCHANGE the latest R&M knowledge and ideas
  2. NETWORK with subject matter experts from all around the world
  3. LEARN new skills and expand your knowledge
  4. GAIN VALUE that can be applied to improve the reliability and maintainability of systems and products through effective management of emerging challenges and risks
What you can look forward to at RAMS:
  • 32 paper sessions from industry professionals, leading researchers, and students
  • 4 panel sessions featuring industry and government leaders
  • 22 tutorials supporting in-depth learning. 
Register for RAMS
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Become a member of IEST before registering for any upcoming training or conferences to receive discounted member rates. 
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2023 Conferences
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Help is here! Visit the IEST Help Center to find answers to these and many other most-frequently-asked questions!
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Industry Partners
Exhibit at ESTECH 2023! Book Now for Best Space & Deals!
Maximize Exposure. Reach Influential Decision Makers.

Build new relationships and inform potential customers about your products and services at ESTECH 2023. Ensure your company is represented as an exhibitor at this high-profile event. By booking early, you’ll also lengthen your pre-event exposure and claim the best location for your business. Visit our website for details on exhibitor benefits and to book your spot—prime space will sell fast!
IEST Corporate Sponsors
Partner Sponsors:
The Aerospace Corporation • Aramark Cleanroom Services • Cintas Corporation - Cleanroom Division • Data Physics Corporation • Johns Hopkins University Applied Physics Laboratory Environmental Test Facility • Prudential Cleanroom Services • Texwipe • Thermotron Industries • White Knight Engineered Products
Gain visibility and knowledge by sponsoring IEST programs. Choose a Corporate Sponsor package that delivers year-round benefits and opportunities.
IEST offers sponsorship experiences to fit a variety of goals and budgets. We can also work together to customize a package. As a Corporate Sponsor, you’ll take advantage of discounts for IEST signature events and membership, and receive exclusive recognition in a variety of IEST advertising and direct marketing channels and digital communications.
Industry Updates
Sponsored & Affiliated Conferences

EOS/ESD Meetings, Symposium and Exhibits
Sept. 12 -23, 2022, Reno, Nevada

ICCCS/International Symposium on Contamination Control
Oct. 11 - 13, 2022, Antalya, Turkey

IEST provides information on non-IEST events as a professional courtesy to our members and industry professionals - we do not endorse any of these events.
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