Standard Operating Procedure for Cleaning Verification of Alcohol Residues in Elixir Manufacturing
| Department | Elixir Department |
|---|---|
| SOP No. | SOP/ELX/170/2025 |
| Supersedes | SOP/ELX/170/2022 |
| Page No. | Page 1 of 10 |
| Issue Date | 11/04/2025 |
| Effective Date | 15/04/2025 |
| Review Date | 11/04/2026 |
1. Purpose
To define the procedure for verification of cleaning effectiveness specifically for removal of alcohol residues (e.g., ethanol, isopropyl alcohol) from product-contact surfaces used in elixir manufacturing.
2. Scope
This SOP applies to all equipment, tanks, vessels, transfer lines, and utensils in the Elixir Department where alcohols are used in the formulation or cleaning processes and require validation of alcohol residue removal post-cleaning.
3. Responsibilities
- Production Operator:
- Perform cleaning of alcohol-exposed equipment as per respective cleaning SOPs.
- Inform QA for verification and sampling.
- QA Department:
- Collect and analyze swab or rinse samples for alcohol residue detection.
- Approve or reject equipment based on compliance with residue limits.
- QC Department:
- Perform analytical testing of alcohol residues (e.g., GC method).
4. Accountability
The Production Head is accountable for proper cleaning and communication with QA. The QA Head ensures verification and compliance. The QC Head is responsible
for analytical testing and timely reporting.
5. Procedure
5.1 Identification of Equipment
- Identify equipment that was in contact with alcohol-based formulations or used alcohol for disinfection/cleaning (e.g., ethanol in sugar syrup, IPA during sanitization).
- Refer to the equipment cleaning log to confirm prior use and last cleaning date.
5.2 Cleaning Execution
- Clean equipment as per the approved cleaning SOP (e.g., SOP/ELX/166 for sanitization, SOP/ELX/169 for product changeover).
- Ensure all rinsing steps are performed thoroughly using purified water to remove residual alcohol.
5.3 Sampling and Verification
- After cleaning and rinsing, QA shall collect either:
- Swab samples from internal product-contact surfaces, or
- Rinse samples from the final rinse water used.
- Sample size:
- Swab: 10 cm × 10 cm area per surface
- Rinse: 100–250 mL from each equipment
- Label and send samples to QC with all relevant details (equipment ID, batch, cleaning date, etc.).
5.4 Analytical Testing
- QC to analyze alcohol content using validated GC or UV method with a defined limit of detection (e.g., ≤10 ppm).
- Compare results against acceptable residue limits as per cleaning validation protocol.
5.5 Approval for Reuse
- QA to review analytical reports and cleaning records.
- Upon satisfactory results, QA shall approve the equipment and update the status label to “CLEANED – READY FOR USE.”
- If results exceed limits:
- Re-clean the equipment.
- Repeat sampling and analysis.
6. Abbreviations
- SOP: Standard Operating Procedure
- QA: Quality Assurance
- QC: Quality Control
- GC: Gas Chromatography
- IPA: Isopropyl Alcohol
7. Documents
- Alcohol Residue Verification Logbook (Annexure-1)
- Swab/Rinse Sampling Form
- QC Analysis Report
8. References
- ICH Q7 – Good Manufacturing Practice for Active Pharmaceutical Ingredients
- 21 CFR Part 211.67 – Equipment Cleaning and Maintenance
- WHO TRS 986 – Annex 4: Cleaning Validation
9. SOP Version
Version: 2.0
10. Approval Section
| Prepared By | Checked By | Approved By | |
|---|---|---|---|
| Signature | |||
| Date | |||
| Name | |||
| Designation | |||
| Department |
11. Annexures
Annexure-1: Alcohol Residue Verification Logbook
| Date | Equipment ID | Sampling Type | Result (ppm) | QC Analyst | QA Approval | Remarks |
|---|---|---|---|---|---|---|
| 11/04/2025 | MXR-ELX-10 | Swab | 4.5 | Neha Patil | Sunita Reddy | Approved |
Revision History:
| Revision Date | Revision No. | Revision Details | Reason for Revision | Approved By |
|---|---|---|---|---|
| 01/01/2024 | 1.0 | Initial SOP Release | New Procedure | QA Head |
| 11/04/2025 | 2.0 | Added rinse sampling method and revised limit | Audit Compliance | QA Head |