INDUSTRY COMPONENT

HEPA Filter Cell

HEPA filter cell is a high-efficiency particulate air filtration component that captures 99.97% of particles ≥0.3 microns.

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Component Specifications

Definition
A HEPA filter cell is a critical component within a HEPA filter bank, constructed from a dense mat of randomly arranged borosilicate glass fibers or synthetic media. It operates through a combination of diffusion, interception, and impaction mechanisms to achieve a minimum efficiency of 99.97% in capturing airborne particles with a diameter of 0.3 micrometers. It is a disposable, sealed unit designed for installation in industrial air handling systems to maintain cleanroom conditions, protect machinery, or ensure product purity.
Working Principle
Air is forced through a dense, pleated media. Particles are captured via: 1) Diffusion (Brownian motion for sub-0.1μm particles), 2) Interception (particles follow airstream lines and contact fibers), and 3) Impaction (larger particles cannot follow curved airstreams around fibers and collide with them).
Materials
Primary media: Borosilicate glass microfibers or synthetic materials (e.g., polypropylene, PTFE-coated glass). Frame: Galvanized steel, aluminum, or plastic (ABS, polystyrene). Sealant: Polyurethane, silicone, or hot-melt adhesive gaskets.
Technical Parameters
  • Depth 2.75 in, 5.9 in, 11.8 in (standard)
  • Efficiency 99.97% @ 0.3 μm
  • Media Type Glass Fiber or Synthetic
  • Pleat Count Varies (e.g., 28-50 pleats/ft)
  • DOP/MPPS Tested Yes
  • Initial Pressure Drop ≤1.0 in w.g. @ rated airflow
  • Max Operating Temperature 250°F (121°C) for standard glass
Standards
ISO 29463, ISO 14644, DIN EN 1822, IEST-RP-CC001

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for HEPA Filter Cell.

HEPA filter HEPA filter cell high efficiency particulate air filter cleanroom filter absolute filter industrial air filtration ISO 29463 EN 1822 HEPA Filter Cell in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

HEPA Filter Bank

A modular assembly of HEPA filters designed to remove airborne particles with high efficiency within air handling systems.

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Engineering Analysis

Risks & Mitigation
  • Media rupture causing contamination
  • Bypass leakage due to failed gasket seal
  • Increased pressure drop reducing system airflow
  • Fire risk if exposed to high temperatures beyond rating
  • Handling damage (punctures, moisture)
FMEA Triads
Trigger: Excessive differential pressure
Failure: Media rupture or frame collapse
Mitigation: Install pressure gauges/alarms; adhere to max pressure drop specs; use pre-filters.
Trigger: Improper installation or damaged gasket
Failure: Air bypass around cell, efficiency loss
Mitigation: Follow installation torque specs; inspect gaskets; perform in-situ leak testing (DOP/PAO).
Trigger: Moisture ingress or chemical exposure
Failure: Media degradation, loss of structural integrity
Mitigation: Use hydrophobic (PTFE) media for humid environments; specify chemical-resistant materials.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Frame dimensions: ±1/16 in (1.6 mm). Efficiency: Must meet or exceed 99.97% at 0.3 μm MPPS per EN 1822-5 or ISO 29463.
Test Method
Efficiency tested via DOP (Di-Octyl Phthalate) or PAO (Poly-Alpha Olefin) aerosol challenge at MPPS (Most Penetrating Particle Size) per IEST-RP-CC034. Leak testing per IEST-RP-CC006.

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between a HEPA filter and a HEPA filter cell?

A HEPA filter cell is the core filtration media and frame unit. A HEPA filter bank is the complete assembly housing multiple cells, gaskets, and support structure.

How often should a HEPA filter cell be replaced?

Replacement is based on terminal pressure drop (typically 2x initial drop) or scheduled maintenance per ISO 14644. In critical environments, monitoring and replacement are continuous.

Can HEPA filter cells be cleaned and reused?

No. HEPA filter cells are disposable. Cleaning damages the fragile media, compromising efficiency and integrity. They must be replaced.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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Helical wire core HEPA Filter Media