Lethal on Pathogens.
Gentle on Instruments.
Andersen’s award-winning EO-Flexible Chamber Technology sets Andersen apart. Removing excess air from the sterilization bag, Andersen’s FDA-cleared sterilizers require less gas to achieve terminal sterilization than any other system on the market. This is EO sterilization reimagined.
Sterilization That Adapts to Your Industry
We serve professionals in medical, dental, veterinary, manufacturing, research, and more — because when sterility matters, flexibility matters too.
Medical Sterilization Solutions
Our EOGas 4® sterilizer is FDA-cleared and uniquely effective for the longest lumens.
Veterinary Sterilization Solutions
Compact and cost-effective, our sterilizers are trusted by veterinary practices worldwide.
Research Sterilization Solutions
Our tabletop sterilizers ensure quick turnaround and minimize contamination risks in research.
Manufacturing Sterilization Solutions
Our tabletop sterilizers ensure quick turnaround and minimize contamination risks in research.
Technology
Is High-Level Disinfection Enough to Keep Patients Safe?
Disinfection kills some. Sterilization kills all. Learn why EO gas is the gold standard for devices other methods can’t handle — and why hospitals trust EO Gas 4+ when safety is non-negotiable.
Why Ethylene Oxide?
Why Now?
Other methods miss what EO gas reaches. EO sterilizes 100% of surfaces, even in hard-to-reach lumens and complex devices. With just a microdose (17.6g), EO Gas 4+ uses 10x less gas than competitors — proving safer doesn’t mean weaker.
FEATURED PRODUCTS
Smart, Scalable Sterilizers
for Every Industry
From benchtop to bulk — choose the EO system that fits your workflow.
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Anprolene AN75
The Anprolene® AN75 is the only FDA-cleared room-temperature EO gas sterilizer available. It’s compact and efficient—perfect for facilities where space is limited but performance is critical.
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EOGas 4
The FDA-cleared EOGas 4 offers fast, flexible sterilization with four customizable cycles. Its quickest cycle finishes in just 3.5 hours, making it ideal for frequently reused high-value instruments.
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EOGas 3
Built for high-throughput facilities, the EOGas 3 delivers top-tier flexibility and efficiency. It can run 6–10 loads independently, allowing multiple cycles to operate at once.
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EOGas 4 Plus
The FDA-cleared EOGas 4 offers fast, flexible sterilization with four customizable cycles. Its quickest cycle finishes in just 3.5 hours, making it ideal for frequently reused high-value instruments.
Featured Accessories
Trusted EO Accessories
From benchtop to bulk — choose the EO system that fits your workflow.
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AN5100 EO Abator
Self-contained indicator with a color-changing medium that confirms EO sterilization success after 48 hours of incubation.
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AN87 Dosimeter
Visual chemical integrator placed inside the load to confirm EO exposure—no lab culture needed.
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AN2203 EZTest Biological Indicator
Removes over 99% of EO emissions using a dry catalyst resin for clean, compliant sterilization.
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AN1004.16 EOGas 4 Refill Kit
The AN1004.16 EOGas 4 refill kit comes with cartridges, sterilization bags, Humidichips and Dosimeters for 14 cycles.
SERVICE AND SUPPORT
Partnered for Your Success
Support and Sterilization Services That Work Around You
We’re With You — Every Cycle, Every Step
Our Healthy Customers Initiative delivers proactive support, follow-up, and ongoing guidance to ensure safe, smooth sterilization.
Reliable Contract Sterilization Services
Need outsourced processing? We offer dependable EO contract sterilization with quick turnaround and expert oversight.
THE DIFFERENCE
What Sets Andersen Apart?
At Andersen, we combine medical expertise with cutting-edge EO technology to deliver unmatched safety, efficiency, and compliance in every cycle.
FDA-Cleared for Duodenoscopes
Our EOGas 4® sterilizer is FDA-cleared and uniquely effective for the longest lumens.
Small dose, Big Impact
Our EO systems use just 1.5 tablespoons of EO — for maximum sterility, minimal emissions.
Built by Surgeons, for Sterile Processing
Founded by Drs. Andersen Sr. & Jr., our mission is rooted in protecting patients through better sterilization.
Trusted By Leading Facilities
Customer Testimonials
Our experience with Andersen has been outstanding.
About Us
Built on Clinical Insight. Backed by Generations.
Andersen Sterilizers started with a surgeon’s question: How can we make sterilization safer, smarter, and accessible for every practice? The answer became a family legacy. Today, we continue developing EO technology that puts people — and patients — first.
Latest Insights on Sterilization
Get expert updates on safety, compliance, and innovation.
Patients Ask: Is High-Level Disinfection Enough?
How Andersen EO Sterilizers Help Veterinary Clinics Save Money
The Role of EO Gas Sterilization in Preventing Healthcare-Associated Infections
Expert Guidance for Your Needs
Tell us a bit about your sterilization needs — our experts will guide you to the right EO solution.