MEGAcell II Group of Filters Blue Gel Seal

Product Overview

  • Patent pending, polymer-based, dual-density, expanded Fluororesin Membrane- eFRM 
  • Minimum 99.99% at 0.3 μm, H13, and 99.995% at MPPS, H14
  • Polyalphaolefin (PAO) compatible
  • Lowest pressure drop mini-pleat HEPA filter available for pharma, life sciences
  • Lightweight anodized aluminum frame
  • Gel, gasket, or knife-edge seal available
  • Thermoplastic hot-melt separators

Typical Applications

Media Type
  • eFRM
Frame Material
  • Anodized extruded aluminum
Max Operating Temperature
  • 158˚F (70˚C)

AAF Flanders eFRM Technology - Today's Alternative to Fragile Microglass HEPA Filters

Designed specifically for the unique requirements and challenges of the pharmaceutical industry, the MEGAcel II eFRM mini-pleat HEPA filter has the proven durability, polyalphaolefin (PAO) compatibility, high particulate filtration efficiency, and lowest pressure drop to meet the demands of pharmaceutical manufacturing. It is the best choice for the most demanding applications, saving both time and money, while reducing contamination risk and invasive unscheduled downtime. With the lowest Total Cost of Ownership of all mini-pleat HEPA filters, the MEGAcel II eFRM will help protect your environment, reduce your business risk, and optimize your clean air related spending.

Proven Reliability With Exceptional Performance

  • MEGAcel II eFRM is designed to increase cleanroom uptime and reduce the risks associated with pharmaceutical manufacturing
  • Pharmaceutical grade eFRM media is proven to be more durable than microglass, delivering superior performance
  • Industry’s first and only eFRM media to be Polyalphaolefin (PAO) compatible, with equivalent PAO holding capacity when compared to microglass media
  • Superior durability and tensile strength, 84 times the pleated strength of microglass
  • Chemical-resistant capabilities reduce media degradation in highly corrosive environments
  • Exceptional water resistance compared to ultrafine microglass
  • Extremely low off-gassing of chemical components, resulting in the highest quality clean air available
  • Lowest pressure drop mini-pleat HEPA filter available, reducing energy consumption for significant savings
  • MEGAcel II eFRM media is manufactured, tested, and packaged in ISO 7 clean facilities to ensure the highest purity, quality, and consistency

Industry-Leading Durability

Independent tests have shown that MEGAcel II HEPA filters with eFRM Media Technology have superior mechanical strength over filters with traditional ultrafine microglass media. 

eFRM abrasion resist chart                                 eFRM burst pressure charteFRM tensile strength


The superior mechanical strength is demonstrated by a high tensile strength, burst pressure, and abrasion resistance. eFRM Media Technology retains its integrity with a high aversion to any potential damage, such as mishaps in handling or installation. This mitigates the risk of filter media failure and additional incurred validation and repair expenses. As a result, there is a decreased risk of contaminants entering cleanroom environments. Protection of sterile products and cleanroom personnel is optimized. Improvement in quality risk management systems of critical applications ensures a consistent supply of quality products and a reduction of failure rates.

eFRM Media Close Up

Reduce Operational Risk

The pharmaceutical industry estimates that 77% of production downtime can be attributed to failures of equipment and environmental problems. This downtime can be caused by HEPA filters failing. Traditional microglass HEPA filters typically fail due to some form of contact combined with the poor mechanical strength of the filter. The actions required when these failures occur include repairing/replacing the HEPA filter, certifying the repair or new installation, investigating potentially contaminated product, and generation of a risk assessment report. Effectively managing the risk and costs associated with successful operation requires utilizing HEPA filters with dramatically higher tensile strength that is highly resistant to chemical degradation, thereby eliminating premature leaking and failure.

Increase Uptime

While FDA Testing Guidance requires critical room leak-testing certification twice a year, non-critical rooms require testing only once a year. With the extremely high tensile strength and durability of the eFRM pleated filter media, 84 times stronger than microglass, ISO 7 and 8 areas could be tested annually. Increasing time between certifications results in less PAO exposure to the gel seal (gel degradation), lower labor costs, and increased production time.

MEGAcel II eFRM - First and Only PAO Compliant eFRM Media HEPA Filter

The purpose of installed HEPA filter integrity testing, also called in-situ testing, is to confirm a flawless performance during normal operation. With AAF Flanders’ new eFRM Media Technology, MEGAcel II filters can be scan tested with the industry standard photometer at the standard aerosol concentrations, as well as the low-aerosol concentration Discrete Particle Counter (DPC) method.

The MEGAcel II filter contains dual-density eFRM Media Technology media specifically developed to retain equivalent amounts of PAO aerosol with equivalent or lower pressure drop increases as ultrafine microglass. The dual-density eFRM layers allow for the in-depth capture of progressively smaller solid particles.

Independent laboratory studies have shown that MEGAcel II eFRM Media Technology have compatible PAO holding capacity as compared to traditional ultrafine microglass HEPA media, while providing significant reduction in system resistance, which equates to energy savings, as seen in the results below.

eFRM 1hr Test Interval Chart

Enhanced Chemical Tolerance

High Corrosion Resistance
eFRM Media Technology is proven to be resistant in highly corrosive environments, and will withstand attacks from common decontamination chemicals. Both components of the eFRM Media Technology, the membrane and non-woven layers, are stable against exposure at the prescribed time and concentration for the above disinfectant agents.

Superior Water Resistance
Based on AAF Flanders’ test lab results, eFRM Media Technology provides superior water resistance in comparison with ultrafine microglass, reducing damage risk.

Negligible Off-Gassing
eFRM Media Technology has extremely low off-gassing of chemical components, resulting in the highest quality clean air available.

For sizes and performance data:

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