Skip to main content
Back to All Products
The EOGas 4 is FDA-cleared

EOGas 4

Fastest Turnaround

The only sterilization system cleared by FDA 510(k) for terminal sterilization of duodenoscopes & colonoscopes.

Andersen’s FDA-cleared, temperature-controlled EOGas 4 features four cycles with active aeration in the same cabinet – the fastest being just 3.5 hours, including aeration. All in a convenient tabletop format.


3.5-Hour Sterilization

Achieves FDA-required 10-6 sterility assurance level for terminal sterilization of medical devices.

Easy Installation

Requires only a 120v or 240v outlet and a 1″ dedicated exhaust line.

Lock Mechanism

Door automatically locks at the start of the cycle and unlocks at the end.

Active Aeration in Same Chamber

Purge probe flushes the liner bag with a constant flow of fresh air at the end of the cycle – no need to transfer items to a separate area. EO-absorbent items may require additional aeration.

17.6g EO Cartridge

Terminal sterility with 90% less EO than any other system on the market. Cartridge protects the hermetically sealed glass EO ampoule from accidental activation.

Make your System Zero Emissions

Andersen abators are a simple, cartridge-based system that employ a dry catalyst resin that converts ethylene oxide to biodegradable organic compounds. Replaceable abator cartridge has a 200 cycle capacity. Spent cartridges are non-hazardous.

Free Operator Training

It’s like having a sterilization expert on staff! Free operator training for the life of your sterilizer and free 24/7 support.

EOGas 4

Simplified Controls

Easy to use two-button interface and digital display. Sterilization status and cabinet temperature shown throughout the cycle.

Controlled Environment

Warm air circulates throughout the chamber walls to maintain a constant temperature – ensuring effective sterilization and aeration.

Process Challenge Device

Built into the purge probe handle to ensure the 10-6 biological indicator is consistently placed in the most difficult location for EO to reach in every cycle – providing data driven results, regardless of the operator.

Unmatched Sterilization Compatibility

Temperature-controlled cabinet sterilizes at low temperature without external vacuum lines or steam generator. Protects your most delicate instruments, electronics, drills, fiber optics, hand pieces and cameras. As well as those plastic, fabric, cellulose or rubber items that you can’t sterilize with other methods. Most any item with the exception of food, drugs or liquids.

Shelf Life

The FDA has cleared EOGas 4 sterilization loads wrapped with Sterisheet® or Tyvek® Sterilization Pouches with Chevron Seal – both have a shelf life of at least three months.

Commonly Sterilized Items

With Andersen, achieve 10-6 SAL terminal sterilization without loss of efficacy (dulling, clouding or degrading):

  • Cystoscopes
  • Ureteroscopes
  • Bronchoscopes
  • Duodenoscopes
  • Colonoscopes
  • Gastrovideoscopes
  • Choledocoscopes

(FDA-cleared for all instruments above and more)

  • Delicate hand-pieces and associated cording
  • Mix-material instruments or trays
  • Volk lenses/loops
  • Implants
  • Sharps
  • Plastic
  • Rubber
  • Non-wovens/Cellulose
  • Fiber optics
  • Other Electronics
  • Batteries

To order, call: 800.523.1276 or View all EOGas 4 Accessories

SPECS – Exterior Dimensions. See brochure for interior.
EOGas 4 Specs

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


Using the EOGas 4 Sterilizer

It’s so easy to operate our EOGas 4 sterilizer. This short (4 min) tutorial proves it! We walk you through the process, step-by-step, and review placement of all recommended accessories.

EOGas 4 Sterilization Process

Here is a quick run-down on how sterilization works in our EOGas 4.

Why Ethylene Oxide (EO/EtO) Sterilization?

Ethylene oxide is the gold standard in sterilization. It offers hospital-level sterility assurance (10⁻⁶) along with
unparalleled gentleness and material compatibility.

Why Andersen?


Turn-around time for delicate medical items has never been this fast – just 3.5 hours, including aeration, with the EOGas 4.


Maximum performance, minimum gas. Just 17.6g of EO – 90% less gas than any other sterilizer on the market.


Delicate instruments, electronics, drills, fiber optics, hand pieces, cameras, plastic, fabric, cellulose and rubber.

Easy to use

The simple interface makes using our sterilizers a breeze. Set it and forget it. Plus free training for life.