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Cleanroom requirements vary widely based on industry standards and the type of processes being performed. Always consult with a cleanroom professional for assistance in selecting the design and classification that are best suited for your application. Common ISO 7 clean room requirements include:
ISO 7 Cleanroom Applications
ISO 7 clean rooms provide air cleanliness levels of a maximum of 10,000 particles (≥0.5µm) per cubic foot and a minimum of 60 air changes per hour. Industries that utilize ISO 7 cleanrooms include:
Medical device manufacturing
Electronics manufacturing
Pharmaceutical compounding
Laboratories
Aerospace product development
(FED STD 209E Equivalent: Class 10,000)
| ≥0.1 µm | ≥0.2 µm | ≥0.3 µm | ≥0.5µm | ≥1µm | ≥5 µm |
| — | — | 1,020,000 | 352,000 | 83,200 | 2,930 |
How to Determine the Correct Cleanroom Classification Based on Your Needs?
A typical cleanroom is designed to keep outside contaminants and particles at a minimum based on the ISO clean room standards. Once fully built and operational, an isolated cleanroom is free from outside particles and contamination. However, the two things that can introduce particles and contamination into your cleanroom are people and processes.
Classification for cleanrooms ranges from ISO 1 to ISO 9, with ISO 9 being the “dirtiest” and ISO 1 being the “cleanest.” These classifications are assigned based on the maximum allowable concentration of particles per cubic foot or meter of air. The lower the ISO class the more stringent the requirements for keeping particles and contamination to the acceptable levels of the room class.
As an example, Class 10,000 cleanroom filtration systems must provide filter coverage of 15-25% and – a minimum of 60 air changes per hour. The standard air flow rate for an ISO 7 filtration system is 9-16 CFM per square foot. The chart below provides an explanation of the differences between our clean room classes.
