We supply Camfil HEPA filters for pharmaceutical plants, laboratories and clean rooms across Ghana. The two classes you’ll see most are H13 and H14: under EN 1822, an H13 captures at least 99.95% of the most penetrating particle size, and an H14 at least 99.995%.
What is the difference between H13 and H14?
MPPS means most penetrating particle size: the size that is hardest for a filter to catch. That makes it a demanding test. For a process that is sensitive to contamination, an H14 lets through far fewer particles than an H13.
| Class | Group | Minimum overall efficiency at MPPS |
|---|---|---|
| E10 | EPA | 85% |
| E11 | EPA | 95% |
| E12 | EPA | 99.5% |
| H13 | HEPA | 99.95% |
| H14 | HEPA | 99.995% |
| U15 | ULPA | 99.9995% |
Where are HEPA filters used in Ghana?
- Pharmaceutical manufacturing areas and clean rooms
- Medical research institutes and laboratories
- Sensitive food and beverage filling zones
- Hospitals and other areas with vulnerable occupants, subject to your clinical requirements
What is the difference between Absolute HEPA and “True HEPA”?
“HEPA-type” and “True HEPA” are often marketing terms. What to look for is a filter class tested to a recognised standard such as EN 1822 or ISO 29463, ideally with individual test results. Camfil’s Absolute range is its HEPA line, and our products page includes Camfil’s own video comparing the two.
How do you protect a HEPA filter?
Put good pre-filters ahead of it. HEPA filters are the most expensive stage, so letting coarse Harmattan dust reach them shortens their life. The pre-filter stage should take most of the dust load. See air filter classes explained.