Program Overview
For every new member you refer to join, you receive a $50 IEST Reward to use for bookstore orders, training and certificate programs, or conference registrations. There is no limit to how many members you can recruit, and no limit on how many IEST Rewards you can earn.   
How to Earn Referral Credit
Participating in this program is easy. Simply direct your referrals to enter your name in the “How Did You Hear About IEST?” section of their membership application, and we will email you a $50 reward coupon code for each.           

Referral Resources

Download Print Application
Dues Support Letter Template
Member Benefits Guide

As a member, your personal recommendations and experiences will have the greatest impact on your peers.  Consider personalizing this sample message:

Hi [FIRST NAME] – Have you considered getting involved with the Institute of Environmental Sciences and Technology (IEST)? I have been a member for [INSERT TIME] and have found it to be very valuable for me and my company. 

IEST is a multidisciplinary technical society whose members are internationally recognized for their contributions to contamination control, cleanrooms, environmental test and reliability, and nanotechnology facilities. They host customized training for organizations and their employees, virtual education and certificate programs, and technical conferences in May and November. As a member, we take advantage of:  

  • Access to the IEST member directory and support services, so we can ask technical questions and get project advice from experts  
  • The opportunity to observe or contribute to the IEST Working Groups that create and revise IEST industry guidelines and Recommended Practices (RPs)
  • Access to select RPs and standards documents for members only, valued at more than $1,000
  • Subscription to theonline Journal of the IEST archive, which includes peer-reviewed research and technical papers dating back to 1958
  • Purchasing discounts from the bookstore, which contains RPs, technical guides, and handbooks written by IEST (up to 35% off)
  • Discounted registration rates for training courses and meetings (up to 25% off)

Let me know if you have any questions. Here is the link to the membership application:


Recruiting new IEST members makes a difference
IEST is a non-profit technical society and ANSI-accredited standards-developing organization; Secretariat of ISO/TC 209 Cleanrooms and associated controlled environments; Administrator of the ANSI-accredited US TAG to ISO/TC 209; and a founding member of the ANSI-accredited US TAG to ISO/TC 229 Nanotechnologies. The support and participation of IEST members and partnering organizations allows us to:

  • Drive IEST’s work on cornerstone standards; we provide expert support for the evolving MIL-STD-810, oversee the ISO 14644 Standards Series as the Secretariat to ISO/TC 209, and lead the conversation on nanotechnology facilities best practices.
  • Back the volunteer experts who write, and keep current, IEST Recommended Practices.
  • Train and advance the environmental sciences and technology community through IEST education, peer-reviewed research, conferences, and support services.

Program Rules & Regulations

  • $50 IEST Reward coupon for every recruited member can be used toward a future education training course registration, conference registration, or IEST Bookstore order of $50 or more. 
  • Only active members in good standing can receive a referral reward code.
  • Program is valid for only new member recruits (people who have not been members since April 2022), not renewals. 
  • Student and Young Professional membership referrals, while welcomed and encouraged, are not eligible toward the incentive program.
  • Complimentary new memberships received through a conference registration package or corporate sponsorship package are not eligible toward the incentive program.
  • To receive credit for a referral, the new member must include the referring member's full name. Only one referring name can be noted. If IEST cannot verify the identity of the referring member's name, no credit will be received for the application.
  • Rewards are non-transferable and may not be exchanged for alternative rewards. 
  • $50 IEST Reward coupons expire on December 31, 2023.
  • Program not open to current IEST Executive Board members or IEST staff.
  • Program rules, regulations, and rewards are subject to change by IEST.