ISO 14644-4 specifies requirements for the design and construction of cleanroom and clean air devices, as well as requirements for start-up and qualification, but does not prescribe specific technological nor contractual means to meet the requirements. This document is intended for purchasers, suppliers, and designers of cleanroom installations.
See also 
- ISO 14644 - standard for Airborne Particulate Cleanliness Classes in Cleanrooms and Clean Zones
- "ISO 14644-4 Scope". IEST. Last updated 2007-12-03. Retrieved 2008-01-17.