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Rethinking ethylene oxide (EO) sterilization

Mesa Labs
20 Oct 2025

For decades, ethylene oxide (EO) has enabled sterilization of sensitive medical devices, but its toxicity and regulatory scrutiny pose growing challenges. Manufacturers must now balance sterility assurance with safety, sustainability, and compliance.

Discover the strategies available, including biological indicators (BIs) and process challenge devices (PCDs), that are reducing EO concentrations while maintaining efficacy, to streamline compliance and protect both people and products.

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Process Challenge Devices® (PCD®)

Mesa Labs

Process Challenge Devices (PCD®) certified to ISO 13485 quality systems for medical devices. These external PCDs (ePCD) ensure success of terminal sterilization cycles of medical devices, and can be used for both validation and routine monitoring of EO sterilization cycles.

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MicrobiologyMicrobiology is the study of microorganisms including protists, prokaryotes, fungi, and, often, viruses. Microorganisms are a useful research tool as genetic vectors and, in immunology, for antibiotic susceptibility testing, cellular biology and genetics. Microorganisms commonly grow readily in incubators with microbial culture media; this can contain chromogenic supplements to differentiate between cell lines. Estimate your culture’s density of microorganisms with colony counters, or screen and select colonies for desirable clones with automated colony pickers. Additionally, equipment is available to monitor environments for the presence of microbes and identify with microbial identification instruments. Find the best microbiology products in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.contamination control

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Rethinking ethylene oxide (EO) sterilization