Sterile Barrier Validation: ISO 11607 & ETO Gas Sterilization in Class 100k Cleanrooms

Authored by: Quality Assurance & Regulatory Affairs Team

"How AI Dispo achieves SAL 10⁻⁶ sterility assurance through robotic blister packaging, continuous cycle parameter logging, and zero-residual degassing."

1. Class 100,000 (ISO Class 8) Cleanroom Environmental Control

Manufacturing medical disposables requires positive pressure cascade differential (≥ 15 Pa), HEPA filtration with ≥ 20 air changes per hour, and continuous particulate count monitoring (< 3,520,000 particles/m³ at ≥ 0.5 µm). AI Dispo operates fully automated injection molding and robotic assembly lines inside certified cleanrooms.

2. Ethylene Oxide (ETO) Sterilization Cycle Kinetics

Sterility Assurance Level (SAL 10⁻⁶) is validated using biological indicators containing 10⁶ Bacillus atrophaeus spores. The sterilization cycle undergoes 4 distinct phases: pre-conditioning humidification (55% RH), ETO gas injection (600 mg/L), exposure dwell (4 hours at 50°C), and forced heated aeration degassing for 7 days to reduce residual ETO below 0.1 µg/device.

3. Sterile Barrier Packaging Integrity (ISO 11607)

Medical-grade Tyvek and medical paper-film blister packaging undergo ASTM F88 peel tensile testing and ASTM F1929 dye penetration inspections to verify complete hermetic perimeter seals with 5-year accelerated aging shelf life.

Keywords:#Class 100k Cleanroom#ETO Sterilization#ISO 13485#Medical Device QA

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