HEPA/ULPA filters are high-efficiency particulate air filters used in FFUs to remove airborne contaminants in controlled environments.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Dimensions | Standard: 610×610×69 mm, 305×610×69 mm | |
| Efficiency | HEPA: ≥99.97% @ 0.3μm; ULPA: ≥99.999% @ 0.12μm | |
| Fire Rating | UL 900 Class 1 or Class 2 | |
| Pressure Drop | Initial: 100-250 Pa; Final: 2-3× initial | |
| Humidity Range | 0-100% RH (non-condensing) | |
| Airflow Capacity | 0.3-0.5 m/s face velocity | |
| Temperature Range | -40°C to 80°C |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
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HEPA filters capture ≥99.97% of particles ≥0.3 microns, while ULPA filters capture ≥99.999% of particles ≥0.12 microns. ULPA filters provide higher efficiency for smaller particles, used in stricter cleanroom classes (ISO 1-3).
Replacement depends on operating hours, particle load, and pressure drop. Typically, every 3-5 years with proper pre-filtration. Monitor pressure drop; replace when it reaches 2-3 times the initial value or if integrity tests fail.
No, these are disposable filters. Cleaning damages the fiber matrix and compromises efficiency. They must be replaced when performance degrades.
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