ISO 10993-7:2026 Introduces A Risk-Based Approach To EO Residual Limits

By Nikki Legg, Senior Scientific Advisor, Microbiology

For years, manufacturers relied on a table-based approach to determine allowable ethylene oxide residual limits, an approach that didn't adequately account for vulnerable patient populations or device-specific clinical realities. The third edition of ISO 10993-7, published in April 2026, changes that. The revised standard introduces a risk-based framework requiring manufacturers to scientifically justify acceptable EO residual limits based on intended use, clinical application, patient population, and exposure duration and frequency.

Nikki Legg, Senior Scientific Advisor in Microbiology, examines what the shift means in practice, including how the new approach differs from the 2008 edition and what manufacturers need to consider when establishing compliant residual limits.

Explore the full analysis to understand where your compliance approach may need to evolve.