That was it. The vial stoppers were micro-deflecting during air freight, opening transient channels—channels that closed before any lab test could catch them.
“The report says 10⁻⁶ mbar·L/s is the limit for sterility,” said Mark, her senior tech. “We’re at 10⁻⁸. We’re fine.” pda technical report 27 pdf
She reopened TR 27 to Chapter 9: Package Integrity Throughout Shelf-Life . Buried in a footnote was a warning she had skimmed past six times: “Leak rates measured under lab vacuum may not predict real-world flexing during transport.” That was it
Dr. Elena Voss stared at the autoclaved vial. The dye test passed. The vacuum decay passed. Yet the biological indicator was positive—again. ” said Mark