ULPA Filters — Ultra-Low Penetration Filters for Critical Areas

ULPA (Ultra-Low Penetration Air) filters represent the highest level of air purification technology available for cleanrooms and critical environments. With a minimum efficiency of ≥99.999% for particles as small as 0.12 μm, ULPA filters are used in advanced microelectronics, semiconductor fabrication, biotechnology research, aerospace, and high-grade medical environments. Farclean provides certified ULPA filters designed to deliver exceptional performance, system reliability, and long service life.

What Makes ULPA Filters Different?

Compared with HEPA filters, ULPA filters ensure significantly higher capture efficiency and are used when even the smallest airborne particles must be controlled. Their extremely fine microfiber media and optimized airflow design make them essential in advanced production processes.

• Higher efficiency: ULPA U15, U16, and U17 ratings capture ≥99.999%–99.999995% of submicron particles.
• Improved contamination control: Designed for environments requiring near-zero particle penetration.
• Advanced protection: Critical for processes involving nanometer-scale products and sterile environments.
• Compliance: Supports ISO 14644 cleanliness classes and high-level GMP zones.

ULPA Filter Efficiency Grades

Key Features of Farclean ULPA Filters

• Ultra-high-efficiency microfiber media: Captures nano-scale particles with extremely low penetration rates.
• Low-leak frame design: Aluminum or stainless-steel frames with precision sealing.
• Factory scan-tested: Each filter is individually tested to ensure efficiency and uniformity.
• Low pressure drop options: Customized airflow design minimizes energy consumption.
• Compatibility: Suitable for ceiling grids, FFUs, biosafety equipment, and laminar flow systems.

Where ULPA Filters Are Used

• Semiconductor cleanrooms (ISO Class 3, ISO Class 4)
• Microelectronics assembly and wafer processing
• Pharmaceutical aseptic filling lines
• Biosafety laboratories and high-purity research
• Aerospace component manufacturing
• Advanced optics and nanotechnology facilities

ULPA vs HEPA — Which Do You Need?

Choosing between HEPA and ULPA depends on the required cleanliness level:

• HEPA: Suitable for most GMP cleanrooms, hospitals, and general clean manufacturing.
• ULPA: Required when particle control at the nanometer level is necessary, especially in semiconductor and advanced research facilities.

Farclean engineers can help you evaluate airflow, pressure drop, and cleanliness requirements to ensure the correct filtration system is selected.

Installation Tips for Best Performance

• Ensure proper gasket compression to avoid leakage around the filter frame.
• Maintain stable airflow to prevent damage to the delicate filter media.
• Perform routine PAO/DOP tests to confirm system integrity and efficiency.
• Use pre-filters (G4→F7→E10) to extend the life of ULPA filters and reduce replacement costs.

Why Choose Farclean ULPA Filters?

• Individually scan-tested with detailed inspection reports
• Custom sizes for ceiling grids, equipment, and FFUs
• High-efficiency media with stable long-term performance
• Global supply from Farclean’s Suzhou cleanroom equipment facility
• Technical support for cleanroom design, validation, and upgrades

Call to Action

Looking for reliable ULPA filters for semiconductor, biotech, or pharmaceutical applications? Contact Farclean for specifications, datasheets, and expert support.

FAQ

How often should ULPA filters be replaced?

Replacement is usually based on real-time pressure drop and contamination levels. With proper pre-filtration, ULPA filters can operate effectively for several years.

Are ULPA filters fragile?

Yes. ULPA media is extremely fine and requires careful handling during installation and maintenance.

Can ULPA filters be used in laminar flow systems?

Absolutely. ULPA filters are widely used in laminar flow hoods, clean benches, and FFU modules where ultra-clean airflow is required.