Filtration is the heart of Cleanroom Design. Cleanroom cleanliness is achieved by a dilution of the air through High Efficiency Particulate Air HEPA Filters. Our normal design is 600 CFM per 2' X 4' Filter
We also consider the activity in the Cleanroom, and the adherence to gowning and cleaning protocols.
| Airflow Averages |
ISO
Class | Health Canada | FS 209E Class | Air Changes/Hour |
| 4 | x | 10 | 200+ |
| 5 | A | 100 | 90-200 |
| 6 | B | 1,000 | 40-80 |
| 7 | C | 10,000 | 30-40 |
| 8 | D | 100,000 | 20-30 |
There are various styles and configurations, including Room Side replaceable, and stainless steel housings.
HEPA Filters can also be installed in an Air Handler. And are available in a "Bag In - Bag Out" Design. Terminal HEPA Filters are connected by a ductwork to an air handler as a source of air.
HEPA Fan Filter units, are HEPA filters with built in fans, with speed control, and are available in normal and reverse flow styles, as well as Room Side Replaceable.
We recommend that HEPA filtration be proteced upstream by Pre Filtration.
We can help you understand the various systems available, and choose the best solution for your project.
HEPA filters are found in various forms: