Sterile Injectable Manufacturing: SOP for Checking Sealing Integrity during Filling Process – V 2.0
Standard Operating Procedure for Checking Sealing Integrity during Filling Process
| Department |
Sterile Injectable Manufacturing |
| SOP No. |
SOP/SIM/075/2025 |
| Supersedes |
SOP/SIM/075/2022 |
| Page No. |
Page 1 of 13 |
| Issue Date |
18/06/2025 |
| Effective Date |
20/06/2025 |
| Review Date |
18/06/2026 |
1. Purpose
To define the step-by-step procedure for checking and verifying the integrity of container sealing during the sterile filling process to prevent contamination, product leakage, and ensure compliance with cGMP requirements.
2. Scope
This SOP applies to all sterile injectable containers including
vials, ampoules, and prefilled syringes that are sealed during the filling process in Grade A/B classified environments at [Company Name].
3. Responsibilities
- Filling Machine Operator: Performs sealing operation and initial checks.
- IPQA Officer: Verifies sealing integrity and documents observations.
- Engineering Officer: Ensures machine sealing parameters are calibrated and maintained.
4. Accountability
The Head – Quality Assurance is accountable for ensuring proper implementation and compliance with this SOP.
5. Procedure
5.1 Preparation for Sealing Integrity Checks
- Ensure that sealing equipment is cleaned and sterilized before the start of operation.
- Verify that sealing parameters (e.g., temperature, pressure, time) are set as per the validated batch parameters.
- Ensure the presence of IPQA personnel before sealing begins.
5.2 In-Process Sealing Integrity Check
- Conduct sealing integrity checks at defined intervals (e.g., every 30 minutes or every 100 units).
- Inspect for the following:
- Uniformity of seal
- Presence of crimping defects
- Any signs of leakage or gaps
- Correct positioning of aluminum cap (vials) or plunger (syringes)
- Perform leak test using vacuum or dye ingress method where applicable (especially for ampoules).
- Record the inspection results in the Sealing Integrity Logbook (Annexure-1).
5.3 Handling of Defects
- Any unit failing the integrity check must be segregated and documented as rejected.
- Investigate cause and check previous 10 sealed units if a defect is detected.
- If a trend of rejection is observed, stop the line and inform QA and engineering.
5.4 Post-Batch Integrity Evaluation
- IPQA to select samples from the beginning, middle, and end of the batch for final sealing integrity checks.
- Document results and include in the Batch Manufacturing Record (BMR).
5.5 Frequency of Monitoring
- Initial line clearance check
- Every 30 minutes during filling
- Post-batch summary check
- During changeovers
6. Abbreviations
- SOP: Standard Operating Procedure
- IPQA: In-Process Quality Assurance
- BMR: Batch Manufacturing Record
- cGMP: Current Good Manufacturing Practices
7. Documents
- Sealing Integrity Logbook – Annexure-1
- Sealing Parameter Checklist – Annexure-2
- Defect Observation Report – Annexure-3
8. References
- 21 CFR Part 211 – CGMP for Finished Pharmaceuticals
- ICH Q8 – Pharmaceutical Development
- WHO TRS 961 Annex 6 – GMP for Sterile Products
9. SOP Version
Version: 2.0
10. Approval Section
|
Prepared By |
Checked By |
Approved By |
| Signature |
|
|
|
| Date |
|
|
|
| Name |
|
|
|
| Designation |
Manufacturing Executive |
QA Executive |
Head QA |
| Department |
Production |
Quality Assurance |
Quality Assurance |
11. Annexures
Annexure-1: Sealing Integrity Logbook
| Date |
Time |
Batch No. |
Checked By |
Observation |
Remarks |
| 18/06/2025 |
10:30 AM |
VIAL-BT-2305 |
Sunita Reddy |
No Defects |
Complies |
Annexure-2: Sealing Parameter Checklist
| Parameter |
Set Value |
Observed Value |
Status |
| Sealing Temperature |
120°C |
121°C |
OK |
| Sealing Pressure |
25 psi |
25 psi |
OK |
Annexure-3: Defect Observation Report
| Date |
Batch No. |
Defect Observed |
Corrective Action |
Performed By |
| 18/06/2025 |
VIAL-BT-2305 |
Crimping Misalignment |
Tool adjusted, 10 units rechecked |
Rajesh Kumar |
Revision History
| Revision Date |
Revision No. |
Details |
Reason |
Approved By |
| 01/01/2022 |
1.0 |
Initial Release |
New SOP |
QA Head |
| 18/06/2025 |
2.0 |
Updated frequency and annexure templates |
Annual Review |
QA Head |