Tabletop Gas Sterilization for Endoscopes and Other


Next Generation EtO Sterilization

The EOGas 4 sterilizer provides the proven reliability of 100% ethylene oxide (EtO) sterilization in a tabletop package using only 17.6g of gas per cycle.

Ethylene Oxide Flexible Chamber Technology:

The reliability of EtO using only 17.6 g/cycle




In the era of CRE and other superbugs, High Level Disinfection (HLD) is no longer enough.  Sterilize your endoscopes with the reliability of 100% EtO.


The high-efficiency Flexible Chamber Technology provides the assurance of EtO sterilization in a compact, tabletop package that uses only 17.6 grams of gas per cycle.


EOGas 4 sterilizes without a vacuum or steam injection cycle.  It’s ideal for your most sensitive instruments and the easy installation does not require water or vacuum lines.

FDA & Validation Information


The flexible endoscopes are validated for the 3 hour cycle at 50°C in the EOGas 4 sterilizer.


Find the FDA clearance information here.

EO-FCT Sterilization vs Traditional EtO Sterilization

Unlike traditional Ethylene oxide sterilizers which involve rigid metal chambers and large external tanks of gas, EOGas 4 uses gas impermeable sterilization bags and unit dose 100% EtO cartridges.  At the start of the cycle, excess air is removed from the bag. By eliminating chamber dead space, EOGas employs only a tiny fraction of the EtO used in other systems.


  • True 10-6, 12-log sterilization
  • Small tabletop footprint
  • Only 17.6g of EtO per load
  • Easy Installation and maintenance
  • Affordability
  • Operator training for the life of the sterilizer
  • Sterilization and aeration in the  same chamber.
  • No need to wait for a large chamber to get full


Using the EOGas 4 sterilizer

How EOGas 4 works

The sterilization bag and its components

        The key feature of EO-flexible chamber system is the sterilization bag. The bag is the sterilization chamber.  It keeps the use of gas at a minimum while ensuring the highest possible concentration.

       The loaded sterilization bag is connected to the gas management system. This will extract most of the air from the bag while the sterilant is released. The opposite will happen once sterilization has been achieved. This process ensures a high gas concentration while minimizing the use of gas.


       The load and the 17.6g EtO cartridge are placed in the sterilization bag. Standard sterility indicators (BIs) are used to ensure cycle success.





Step by step operation of EOGas 4

Frequently Asked Questions

  • 1. How long does it take to sterilize an endoscope?

    Endoscopes are sterilized in a 3.5 hour cycle.  The user must also follow manufacturer EtO aeration guidelines that could be up to an additional 12 hours of aeration.




  • 2. Do you need water or steam heat lines?

        No.  Our tabletop unit only needs a 1 inch port to the outside.

  • 3. Is it FDA cleared for human use?

     Yes. See FDA endoscope information above.

  • 4. How many endoscopes can be sterilized at a time?

    Depends on endoscope type and size.  Please see FDA validation information above.

  • 5. Is it difficult to install?

    No.  It is very easy and convenient to install and comes in a tabletop package.

  • 6. Is EtO corrosive on endoscopes?

    No.  EtO is the most gentle type of sterilization available.  Perfect for your most delicate instruments.

  • 7. Is training included in the price?

    Yes, we offer training free of charge for the life of the sterilizer

  • 8. Will EtO be banned?

    No.  EtO is used in many different household products and has a similar chemical ratings as other products such as hydrogen peroxide.

Andersen sterilizers are 100% US made. Proudly designed and manufactured at our headquarters in Haw River, North Carolina.

Andersen provides free training for as many operators as required, for the lifetime of any of its sterilizers.



We have the sterilizer that meets your needs!

Contact Us


Tel: 800-523-1276




Andersen Products, Inc.

Health Science Park • 3202 Caroline Drive

Haw River, NC 27258-9564 USA






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EO-FCT Sterilization vs

Traditional EtO Sterilization