ISO Class 6 Cleanroom Info

Information on ISO 14644-1:2015 class 6 Cleanroom Classification.

  • Federal Standard 209E equivalent: Class 1,000
  • Air changes per hour required: 150-240
  • For ISO Class 6 cleanrooms, organisations typically measure micron sizes 5.0µ, 0.5µ and 0.3µ.
  • See the maximum allowable concentrations by cleanroom class on our Cleanroom Classifications page.

ISO Class 6 Cleanrooms

Considerations for ISO class 6 cleanrooms

High Efficiency Penetration Air (HEPA) Filtration is 99.99% efficient at 0.3 micron and should be considered when looking to achieve ISO class 6.

Hardwall cleanroom construction is most effective at achieving the environment required for ISO class 6.

If organisations are working towards GMP grades, monobloc is the most effective solution, as it can accommodate required features such as interlocked doors and coved floors.

See our case studies for more information.

Clothing considerations for ISO class 6 cleanrooms

Find cleanroom clothing for ISO Class 6 cleanrooms at

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