Standard Operating Procedure for Cleaning Validation of Mixing Vessels in Gel Manufacturing
| Department | Gel Manufacturing |
|---|---|
| SOP No. | SOP/GM/132/2025 |
| Supersedes | SOP/GM/132/2022 |
| Page No. | Page 1 of 11 |
| Issue Date | 09/06/2025 |
| Effective Date | 11/06/2025 |
| Review Date | 09/06/2027 |
1. Purpose
To define the procedure for performing cleaning validation of mixing vessels used in gel manufacturing, ensuring that equipment is consistently clean and free from residues, preventing cross-contamination and ensuring regulatory compliance.
2. Scope
This SOP applies to all mixing vessels used in
the manufacture of gel formulations that require cleaning validation in accordance with GMP, ICH, and regulatory requirements.
3. Responsibilities
- Production Staff: Perform cleaning as per SOP and record activities.
- QA Analyst: Conduct swab/rinse sampling and analytical testing.
- Validation Officer: Plan and execute validation batches, document reports.
- QA Head: Review and approve cleaning validation protocols and reports.
4. Accountability
Head – Quality Assurance and Head – Manufacturing
5. Procedure
5.1 Preparation of Cleaning Validation Protocol
- Identify product with worst-case scenario (e.g., highest toxicity, lowest solubility).
- Define acceptance criteria: NMT 10 ppm carryover, visual cleanliness, NMT 0.1% residue of previous product.
- Specify sampling plan, analytical method, limits, and equipment to be validated.
5.2 Execution of Cleaning Procedure
- Clean mixing vessels as per the approved cleaning SOP for the product.
- Ensure visual cleanliness and log activity in the Equipment Cleaning Logbook.
5.3 Sampling and Testing
- Conduct swab sampling from hard-to-clean areas (e.g., agitator blade, manhole, discharge valve).
- Use validated methods (HPLC/UV) for detection of residue or cleaning agent.
- Record data in Annexure-1 (Swab Sample Result Sheet).
5.4 Acceptance Criteria
- No visible residue on equipment surface.
- Residue levels below calculated MACO (Maximum Allowable Carry Over).
- Microbial count within limits (NMT 100 CFU/cm²).
5.5 Validation Report
- Compile results, deviations, and conclusions in a validation summary report.
- Attach all raw data, chromatograms, and calibration certificates.
- QA Head to review and approve the report.
5.6 Revalidation Criteria
- Change in product formulation or cleaning method.
- Failure of routine cleaning verification.
- Major equipment maintenance or modifications.
6. Abbreviations
- MACO: Maximum Allowable Carry Over
- CFU: Colony Forming Units
- QA: Quality Assurance
- HPLC: High Performance Liquid Chromatography
7. Documents
- Cleaning Validation Protocol
- Swab/Rinse Sampling Form – Annexure-1
- Validation Summary Report
8. References
- ICH Q7: Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients
- WHO TRS 986 Annex 7 – Cleaning Validation Guidelines
- Schedule M – Equipment Cleaning Validation Requirements
9. SOP Version
Version: 2.0
10. Approval Section
| Prepared By | Checked By | Approved By | |
|---|---|---|---|
| Signature | |||
| Date | |||
| Name | |||
| Designation | Jr. Production Chemist | QA Executive | Head – Manufacturing |
| Department | Gel Manufacturing | Quality Assurance | Manufacturing |
11. Annexures
Annexure-1: Swab Sample Result Sheet
| Location | Sample ID | Surface Area (cm²) | Residue Detected (ppm) | Acceptance Limit (ppm) | Result |
|---|---|---|---|---|---|
| Agitator Blade | 10 | ||||
| Manhole Rim | 10 | ||||
| Outlet Valve | 10 |
Revision History
| Revision Date | Revision No. | Change Description | Reason | Approved By |
|---|---|---|---|---|
| 20/04/2022 | 1.0 | Initial release | New SOP | QA Head |
| 09/06/2025 | 2.0 | Revised validation criteria and updated sampling points | Annual Review | QA Head |