Lyo Clinic — Freeze-Drying Troubleshooting
Ask questions about lyophilization failures and get expert-verified answers. Covering primary drying collapse, vacuum leak detection, residual moisture, and FDA/GMP compliance issues. 5 expert upvotes automatically verify an answer.
Collapse Temperature Exceeded During Primary Drying — How to Recover?
We observed product collapse in our mAb formulation during primary drying. Shelf temperature was set at -20°C with chamber pressure at 100 mTorr...
Vacuum Leak Detection: Systematic Approach for GMP Environments
Our production lyophilizer is showing intermittent vacuum loss during the drying cycle. Leak rate exceeds 30 mTorr/hour...
Eutectic Temperature Measurement: DSC vs. FDM — Which is More Reliable?
We are developing a new lyophilization cycle for a peptide drug product. The DSC shows Teu at -22°C but FDM shows collapse at -28°C...
Residual Moisture Content Exceeds 3% After Secondary Drying
Our freeze-dried injectable product consistently shows residual moisture of 3.2-3.8% by Karl Fischer. Secondary drying at 40°C for 6 hours...
Stoppering Force Optimization for 20mm Vials in Automated Loading
We're experiencing inconsistent stoppering in our production lyophilizer. Some vials show incomplete sealing...