Chlorine Dioxide as an EtO Alternative: A Green Path for Medical Device Sterilization

Ethylene oxide is under sustained regulatory and public scrutiny as a hazardous air pollutant, and repeated EO facility closures have threatened medical device supply. That pressure has made chlorine dioxide (CD) one of the most discussed alternatives in the industry.

What makes CD a "green" alternative

• No carcinogenic EO/ECH residuals to aerate off or document against ISO 10993-7 limits
• Lower environmental and worker-exposure profile that supports ESG and sustainability commitments
• Reduced dependence on a shrinking pool of EO facilities facing regulatory pressure
• Low-temperature, low-humidity operation that protects sensitive electronics and combination devices

Where EO still wins

CD is not a universal replacement. EO still penetrates long lumens, dense loads, and certain packaging configurations more effectively, and it carries the longest regulatory history of any gas sterilant. A responsible evaluation keeps EO on the table rather than treating CD as an automatic upgrade.

A low-risk way to evaluate the switch

The safest path is to qualify CD while keeping your validated EO process as a fallback. Because we operate both methods on one campus, a team can run comparative cycles, characterize residuals and material effects, and make a data-driven decision without betting the program on a single chamber or vendor.

Standards and validation

Our chlorine dioxide process runs under an ISO 13485 quality system and is aligned to ISO 14937, the general requirements standard for a sterilizing agent, with overkill or bioburden-based release scoped to your device.