Editorial Technical Reference

HEPA/ULPA Filter Module

This page explains how HEPA/ULPA Filter Module is classified within Chemical Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A modular filtration unit containing HEPA or ULPA filters that provides sterile air supply and containment within aseptic barrier systems.

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Product Specifications

Technical details and manufacturing context for HEPA/ULPA Filter Module

Definition
The HEPA/ULPA Filter Module is a critical component of Aseptic Barrier systems (Isolators/RABS) that ensures a controlled, particle-free environment. It consists of high-efficiency particulate air (HEPA) or ultra-low penetration air (ULPA) filters housed in a sealed module, which removes airborne contaminants and microorganisms from the air supply. Within the aseptic barrier, this module maintains positive or negative pressure differentials, prevents cross-contamination, and protects both the product and the external environment during pharmaceutical, biotech, or sterile manufacturing processes. The module is designed for integration into barrier systems where it provides the final stage of air filtration. Its construction typically includes a glass fiber filter media, an aluminum or stainless steel frame, and polyurethane or silicone gaskets to ensure a leak-tight seal. The filter class, airflow, pressure drop, and efficiency are specified according to ISO 29463, with H13–H14 classes and efficiencies of 99.95–99.995% at MPPS. Nominal airflow ranges from 500 to 2000 m³/h, and initial pressure drop is 150–300 Pa. Operating temperature is -40 to 85 °C, and non-condensing humidity up to 95% RH. Operating pressure is 1.0–1.6 MPa. Sealing materials can be EPDM or silicone, and frame materials are typically 304 or 316L stainless steel per ASTM A240. Weight ranges from 15 to 60 kg, and standard dimensions are 610×610×292 to 1220×610×292 mm. These values are reference ranges; actual specifications must be confirmed with the manufacturer for the specific model and application. The module is a component, not a standalone system, and requires proper installation and maintenance to ensure performance. Verification of filter integrity and pressure differentials is essential during operation. Failure to maintain the module can lead to contamination and compromised sterility. Always consult the supplier for model-specific data and compliance with applicable standards.
Working Principle
Air is forced through the filter media, which captures particles via mechanisms including interception, impaction, and diffusion. HEPA filters remove ≥99.97% of particles ≥0.3 μm, while ULPA filters remove ≥99.999% of particles ≥0.12 μm. The module ensures unidirectional airflow and maintains sterility by preventing particle ingress or egress. The filter media is sealed within the module to prevent bypass. The pressure drop across the filter increases as it loads with particles, indicating the need for replacement. The module operates within specified temperature, humidity, and pressure ranges to avoid damage to the media. Proper sealing and gasket integrity are critical to maintain the pressure differential and prevent contamination. The module is designed for integration into aseptic barrier systems, where it provides the final filtration stage. It does not generate airflow itself but relies on the system's blower. The efficiency and airflow must be matched to the system's requirements. Regular integrity testing is required to ensure the filter is functioning correctly.
Common Materials
Glass fiber filter media, Aluminum or stainless steel frame, Polyurethane or silicone gaskets
Technical Parameters
ParameterTypical rangeNotes & selection driver
Filter ClassH13–H14H13 for high efficiency, H14 for higher efficiencyISO 29463
Nominal Airflow500–2000 m³/hSelect based on room volume and required air changesISO 29463
Initial Pressure Drop150–300 PaHigher pressure drop increases energy consumptionISO 29463
Filtration Efficiency99.95–99.995 %MPPS efficiency for H13/H14ISO 29463
Operating Temperature-40–85 °CExceeding range may damage filter media
Operating Humidity0–95 % RHNon-condensing; high humidity may affect filter life
Sealing MaterialEPDM–SiliconeEPDM for general, silicone for high temp
Frame Material304–316L316L for corrosive environmentsASTM A240
Weight15–60 kgDepends on size and material
Dimensions (W×H×D)610×610×292–1220×610×292 mmStandard sizes; custom available

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Filter Media Part
    Primary filtration element that captures particles and microorganisms
    Material: Glass fiber or PTFE membrane
  • Frame/ Housing Part
    Provides structural integrity and seals the filter within the module
    Material: Stainless steel or anodized aluminum
  • Gasket/ Seal Part
    Ensures airtight seal between filter and housing to prevent bypass
    Material: Polyurethane, silicone, or closed-cell foam
  • Support Grid Part
    Reinforces filter media against airflow pressure and vibration
    Material: Aluminum or plastic

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for HEPA/ULPA Filter Module.

ulpa filter module

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Aseptic Barrier (Isolator/RABS)
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Clean Room Assembly Station
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Cleanroom Environmental Control System
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Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Max 500 Pa (2 in. H₂O) differential pressure
flow rate: 0.1 to 1.0 m³/s (200 to 2100 CFM) per module
temperature: 0°C to 60°C (32°F to 140°F)
slurry concentration: Not applicable - dry air filtration only
Media Compatibility
✓ Pharmaceutical grade clean air ✓ Electronics manufacturing cleanrooms ✓ Hospital isolation room ventilation
Unsuitable: High moisture or oil-laden air streams (>80% RH or oil mist present)
Sizing Data Required
  • Required air volume (CFM or m³/h)
  • Required cleanliness class (ISO 14644-1 or FS209E)
  • Available installation space dimensions

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Filter Media Degradation
Cause: Chemical attack from aggressive process gases or cleaning agents, leading to fiber breakdown and loss of filtration efficiency.
Seal Failure
Cause: Mechanical stress from improper installation, vibration, or gasket material incompatibility, resulting in bypass leakage around the filter frame.
Maintenance Indicators
  • Significant and sustained increase in pressure drop across the filter (ΔP) beyond the manufacturer's specified clean or final limit.
  • Visible particulate shedding downstream of the filter or a failed integrity test (e.g., aerosol photometer or particle counter scan).
Engineering Tips
  • Implement strict environmental monitoring and control of upstream air quality (humidity, chemical vapors, particulate load) to reduce the contaminant challenge to the filter media.
  • Use manufacturer-recommended installation procedures and torque specifications for gasketed frames, and perform regular in-situ integrity testing to detect seal leaks before they compromise the clean environment.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 29463: High-efficiency filters and filter media for removing particles in air EN 1822: High efficiency air filters (EPA, HEPA and ULPA) IEST-RP-CC001.6: HEPA and ULPA Filters

Quoted from the published standard.

Manufacturing Precision
  • Frame Squareness: ±0.5°
  • Seal Flatness: 0.1mm per 300mm
Quality Inspection
  • Particle Penetration Test (MPPS method)
  • Pressure Drop Test at rated airflow

Manufacturers of HEPA/ULPA Filter Module

Manufacturer profiles associated with HEPA/ULPA Filter Module.

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Frequently Asked Questions

What is the difference between HEPA and ULPA filters in this module?

HEPA filters remove at least 99.97% of particles at 0.3 μm, while ULPA filters remove at least 99.999% of particles at 0.12 μm. The module can be configured with either type depending on the required cleanliness level.

How do I select the correct filter class and airflow for my application?

Filter class (H13 or H14) and nominal airflow (500–2000 m³/h) should be chosen based on the room volume, required air changes, and contamination risk. Consult the system designer and confirm with the manufacturer for the specific model.

What maintenance is required for the filter module?

Regular integrity testing (e.g., PAO or DOP tests) and pressure drop monitoring are essential. Replace the filter when pressure drop exceeds the specified range or when integrity test fails. Follow the manufacturer's instructions.

Can the module operate in high humidity or extreme temperatures?

The module is rated for operating temperatures from -40 to 85 °C and non-condensing humidity up to 95% RH. Exceeding these ranges may damage the filter media. Always verify the actual environmental conditions against the specifications.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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