The standard cleanroom classification range is ISO 1 to ISO 9, with ISO 1 being the cleanest and ISO 9 representing a standard room.
The most common cleanroom projects fall within the ISO 3 to ISO 8 range, which means that an ISO 8 cleanroom allows for the most particles in the air before reaching the territory of an average room. 
What Are the Elements of an ISO 8 Cleanroom?
An ISO 8 cleanroom has specific characteristics that should be considered for construction planning. Keep in mind the following three key characteristics.
1. Know the Allowable Particle Count
ISO 8 (Class 100,000) allows for the highest concentration of particles for a cleanroom:
- 0.1 µm, 0.2 µm, and 0.3 µm: exceptionally high volume of particles
- 0.5 µm or smaller: 3,520,000 allowable particles
- 1.0 µm or smaller: 832,000 particles
- 5.0 µm or smaller: 29,300 particles
2. Know the Air Changes Per Hour
A cleanroom uses HEPA filters to remove particles from the air. The requirements for how often to filter particles varies for each classification.
On the range of classifications, an ISO 3 cleanroom will require the most air changes per hour, while an ISO 8 cleanroom will require the fewest number of air changes per hour.
There are many different factors that go into deciding the desired number of air changes per hour:
- Cost of construction
- Size of the room
- Number of anticipated users
- Desired processes in the room
- Equipment in the room
- Likely heat gain
3. Know the Cleanroom Layout
You need to understand the space requirements, including air/equipment requirements, layout, and personnel requirements to make sure that you have the proper space plan.
AMCBP Qualified for Cleanroom Construction Builds
AM Cleanroom Build and Performance (AMCBP) specializes in cleanroom construction projects from ISO 3 to 8 classification.
Our experienced team understands the essential characteristics of each cleanroom and how to adjust the project to meet the specific ISO classification.
You can view our portfolio of cleanroom construction projects for high-tech companies, semiconductors, pharmaceuticals, and manufacturing facilities to better understand our capabilities.
To find out more about leveraging our cleanroom expertise for your next project, contact AMCBP today.