When planning a clean room, one of the first questions businesses ask is, “Which ISO classification do I need?”
Choosing the correct classification is essential for maintaining product quality, meeting regulations and ensuring your processes operate safely.
Arena Supplies designs and constructs clean rooms ranging from ISO Class 1 to ISO Class 9, allowing every facility to be tailored to its intended application.
What is ISO 14644?
ISO 14644 is the international standard used to classify clean rooms based on the concentration of airborne particles.
The lower the ISO class number, the cleaner the environment.
Common ISO Classifications
ISO Class 1–3
Used for highly sensitive semiconductor manufacturing and specialist scientific research.
ISO Class 4–5
Typically found within pharmaceutical manufacturing, sterile production and advanced medical device facilities.
ISO Class 6–7
Ideal for biotechnology, laboratories and precision engineering.
ISO Class 8–9
Suitable for controlled manufacturing environments where lower contamination levels are acceptable.
Selecting the wrong classification can increase construction costs or leave your business unable to meet industry standards.
Factors That Influence Classification
Several elements determine the final clean room specification, including:
- Manufacturing process
- Product sensitivity
- Number of personnel
- Equipment installed
- Required airflow
- Pressure differentials
- Temperature control
- Humidity control
Every project begins with understanding how the facility will operate.
Beyond Air Quality
Modern clean rooms also control:
- Temperature stability
- Relative humidity
- Positive or negative pressure
- HEPA filtration
- Laminar airflow
- Lighting
- Noise levels
These systems work together to maintain a stable production environment.
Why Work With Arena Supplies?
With over 50 years of construction experience, Arena Supplies delivers complete clean room solutions, managing every element from structural design through to final certification.
Whether you require a pharmaceutical clean room, electronics manufacturing suite or laboratory environment, our experienced team can recommend the ideal ISO classification for your business.