ISO 7 Cleanroom Design & Construction
Cleanroom planning that connects the required air cleanliness with the people, equipment and activities inside the room.
Define the performance brief
ISO 14644-1 classifies air cleanliness by airborne particle concentration. ISO 7 describes a particle cleanliness class, rather than a complete design specification.
For an ISO 7 project, start by confirming the process, relevant particle sizes and the occupancy state in which the classification is required. These decisions inform the design brief and subsequent testing.
Classification reference: ISO 14644-1
Design the room as a connected system
- Room layout and equipment arrangement.
- Personnel movement and material transfer.
- Filtration, supply and return-air interfaces.
- Pressure relationships appropriate to the process.
- Cleanable finishes and service penetrations.
- Access for maintenance and performance testing.
Plan for operation as well as construction
Share expected occupancy, process equipment and heat loads early. Your project team can then coordinate the room envelope and mechanical services with the operational brief.
We help turn these requirements into the construction scope, with testing and handover responsibilities agreed before the facility is put into use.
Common project questions
Should I choose ISO 7 or ISO 8?
The choice should follow your product and process requirements. ISO 7 permits a lower concentration of airborne particles than ISO 8 at the same particle size. A project discussion helps establish the appropriate brief.
Does an ISO class determine the air-change rate?
No single air-change rate follows automatically from the class. Mechanical design needs to account for the room, process, occupancy and performance requirements.
Let’s plan your next project.
A new facility, an upgrade or a specialist requirement. Start with a conversation.