The Institute of Environmental Sciences and Technology (IEST) is a non-profit, technical society. Information on ISO 14644 and ISO 14698 Standards can be found through this organization.

Founded in 1953, the organization is headquartered in Arlington Heights, Illinois. Its members are internationally recognized in the fields of design, test, and evaluation; contamination control; product reliability; and aerospace.

International Standards

The organization is the Secretariat of ISO/TC 209: cleanroom and associated controlled environments. This committee writes the ISO 14644 Standards. IEST is also a founding member of the ANSI-accrediated US TAG to ISO/TC 229 - Nanotechnologies.

The IEST also distributes to the public all ISO 14644 and ISO 14698 Standards.

Recommended Practices

IEST publishes and disseminates up-to-date, reliable, technical information within each of its divisions known as IEST Recommended Practices. These Recommended Practices provide procedures based on peer-approved applications. These documents are then formulated by IEST Working Groups. IEST has also revised such Federal Standards as FED-STD-209E, MIL-STD-781, MIL-STD-810, and MIL-STD-1246 (now IEST-STD-1246D).

Contamination Control Recommended Practices

  • IEST-RP-CC001.4: HEPA and ULPA Filters
  • IEST-RP-CC002.2: Unidirectional Flow Clean-Air Devices
  • IEST-RP-CC003.3: Garment System Considerations in Cleanrooms and Other Controlled Environments
  • IEST-RP-CC004.3: Evaluating Wiping Materials Used in Cleanrooms and Other Controlled Environments
  • IEST-RP-CC005.3: Gloves and Finger Cots Used in Cleanrooms and Other Controlled Environments
  • IEST-RP-CC006.3: Testing Cleanrooms
  • IEST-RP-CC007.2: Testing ULPA Filters
  • IEST-RP-CC008.2: High-Efficiency Gas-phase Adsorber Cells
  • IEST-RP-CC011.2: A Glossary of Terms and Definitions Relating to Contamination Control
  • IEST-RP-CC012.2: Considerations in Cleanroom Design
  • IEST-RP-CC013.2: Calibration Procedures and Guidelines for Selecting Equipment Used in Testing Cleanrooms and Other Controlled Environments
  • IEST-RP-CC014.1: Calibration and Characterization of Optical Airborne Particle Counters
  • IEST-RP-CC016.2: The Rate of Deposition of Nonvolatile Residue in Cleanrooms
  • IEST-RP-CC018.4: Cleanroom Housekeeping - Operating and Monitoring Procedures
  • IEST-RP-CC019.1: Qualifications for Organizations Engaged in the Testing and Certification of Cleanrooms and Clean-Air Devices
  • IEST-RP-CC020.2: Substrates and Forms of Documentation in Cleanrooms
  • IEST-RP-CC021.2: Testing HEPA and ULPA Filter Media
  • IEST-RP-CC022.2: Electrostatic Charge in Cleanrooms and Other Controlled Environments
  • IEST-RP-CC023.2: Microorganisms in Cleanrooms
  • IEST-RP-CC024.1: Measuring and Reporting Vibration in Microelectronics Facilities
  • IEST-RP-CC026.2: Cleanroom Operations
  • IEST-RP-CC027.2: Personnel Practices and Procedures in Cleanrooms and Controlled Environments
  • IEST-RP-CC028.1: Minienvironments
  • IEST-RP-CC029.1: Automotive Paint-Spray Applications
  • Newly Revised IEST-RP-CC031.2: Method of Characterizing Outgassed Organic Compounds from Cleanroom Materials and Components
  • IEST-RP-CC034.3: HEPA and ULPA Filter Leak Testing
  • IEST-STD-CC1246D: Product Cleanliness Levels and Contamination Control Program

Design, Test, and Evaluation Recommended Practices

Product Reliability Recommended Practices

  • IEST-RP-PR001.1: Management and Technical Guidelines for the ESS Process

IEST is currently in the works of developing Nanotechnology Recommended Practices. IEST Working Group 200 members have been meeting for many months to determine the structure of these documents.

Journal of the IEST

The online Journal of the IEST publishes peer-reviewed technical papers and free TechTalk articles related to the fields of contamination control; design, test, and evaluation; and product reliability. The online Journal provides never-before-available access to an entire decade of technical articles and peer-reviewed technical papers on simulation, testing, control, current research, and teaching of environmental sciences and technologies. The Journal of the IEST is the official publication of IEST, the Institute of Environmental Sciences and Technology, of archival quality with continuous publication since 1958. The April 2008 marks the 50th anniversary of the Journal of the IEST.

Education Courses and Meetings

Space Simulation Conference: October 20-23, 2008, Annapolis, Maryland

IEST Fall Conference (contamination control conference): November 10-13, 2008, Arlington Heights, Illinois

Vibration Basics A-Z Course: November 12-13, 2008, Arlington Heights, Illinois

ESTECH 2009: May 4-7, 2008, Schaumburg, Illinois


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