Advanced Air Technologies offers a combination of scrubbing equipment to accomplish ethylene oxide (EtO, EO) and propylene oxide (PO) abatement regulation for industrial and commercial applications. Combining the Orion Series™ Epoxide Scrubber and the Safe-Cell II 490A Dry bed proprietary process tackles all of your abatement requirements. Some of our installed systems operate at over 10,000 cubic feet of airflow per minute on a continuous basis. The Safe-Cell Series™ offers more than 99% efficiency with a safety record that is unparalleled compared to thermal oxidation.

Epoxide Scrubbers, EtO, EO, PO Scrubbers

No other air scrubber supplier can match the experience of AAT in the design and operation of epoxide scrubber systems. AAT has been building ethylene oxide (EO or EtO) and propylene oxide (PO) abatement systems since 1987 and we understand the intricate design considerations that are unique to this application.

Our Orion Series™ EO / PO scrubber systems are tailored to your detailed specifications and plant characteristics. Our design flexibility allows the use of preferred components and materials, ensuring that our system can be fully and safely integrated into your existing plant environment and methodologies.

The technology used in our epoxide scrubber systems is the safest of all technologies available. We guarantee compliance to all federal, state and local emissions requirements. Entrust the safety of your plant and your personnel to a manufacturer with extensive epoxide scrubbing experience.

Typical Industry Applications

  • Chemical Reactors
  • Contract Sterilization Facilities
  • Spice and Food Processing
  • Pharmaceutical Processes
  • Storage Tank Venting

Safe Cell II Model DR-490A

Dry Bed Ethylene Oxide Air Scrubbers

The Safe Cell II is a proprietary high-volume dry bed filter used to safely destroy EtO. The key to the process is our proprietary chemical reactant material that destroys the EtO. The spent reactant may be easily disposed in non-hazardous landfills. Check with your local waste management company

DR-490AFeatures & Benefits

  • No Hazardous By-Products
  • No Water or Drains Required
  • All Stainless Steel Construction
  • No High-Temperature Duct
  • Safest Available Technology
  • Room Temperature Operation
  • Industry Proven
  • Performance Guaranteed

Model DR-490A

Purchase a Safe-Cell II Model DR-490A System and eliminate Ethylene Oxide (EtO) emissions from your facility. Applications include backvents, aeration room exhausts, door hoods, and other fugitive emissions. Another common use for the DR-490A is a polisher following our Orion Series™ EO/PO scrubber systems. We guarantee compliance with state and federal NESHAP regulations.

Specifications *

  • Air Flow Rate: Up to 2,000 CFM
  • EtO Concentration: 1-100 ppm (Typical), Up to 5000 ppm (Intermittent)
  • Removal Efficiency: Up To 99.9+ %
  • EtO Removal Capacity per unit: Minimum 280 lbs. of EtO @ 99.9+ %
  • Material Of Construction: Stainless Steel
  • Operating Weight: 2300 lbs.

Standard Equipment Package

  • DR-490A
  • Exhaust Fan
  • Reactant Change-Out Kit


  • Exhaust Fan Motor Starter
  • Maintenance Contract
  • Start-Up Service


  • Proven Performance, Guaranteed
  • Multiple Units Up To 50,000 CFM
  • Safe, Passive Room Temperature Operation
  • Low Maintenance
  • Minimal Energy Costs
  • Stainless Steel Construction

Product Diagrams


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