Procedure for Conducting Container Integrity Tests for Aerosol Products
| Department | Aerosol |
|---|---|
| SOP No. | SOP/Aerosol/181/2025 |
| Supersedes | SOP/Aerosol/181/2022 |
| Page No. | Page 1 of Y |
| Issue Date | 06/02/2025 |
| Effective Date | 16/02/2025 |
| Review Date | 06/02/2028 |
1. Purpose
The purpose of this Standard Operating Procedure (SOP) is to define the process for testing container integrity of aerosol products to ensure compliance with quality standards, prevent leaks, and maintain product safety.
2. Scope
This SOP applies to all aerosol products, including pressurized cans, valves, and seals, in the manufacturing and packaging areas.
3. Responsibilities
- Quality Control (QC) Team: Responsible for performing container integrity tests.
- Production Team: Responsible for ensuring cans are properly crimped and sealed.
- Quality Assurance (QA) Team: Responsible for verifying test results and ensuring compliance.
- Engineering Team: Responsible for maintaining integrity testing equipment.
4. Accountability
The Quality Control Manager is accountable for ensuring proper container integrity testing and compliance with industry regulations.
5. Procedure
5.1. Types of Container Integrity Tests
- Vacuum Leak Test: Detects leaks by applying a vacuum to the container.
- Pressure Decay Test: Measures pressure loss over time to identify leaks.
- Water Bath Test: Identifies leaks by immersing filled aerosol cans in warm water.
- Dye Penetration Test: Uses dye solutions to detect cracks or leaks in container seams.
5.2. Equipment Setup
- Ensure testing equipment is calibrated before each use.
- Verify that aerosol cans are at
ambient temperature before testing.
Record equipment settings and calibration in the Equipment Calibration Log (Annexure-1).
5.3. Performing Container Integrity Tests
5.3.1. Vacuum Leak Test
- Place the aerosol can in the vacuum chamber.
- Apply vacuum and observe pressure stability for 60 seconds.
- Record test results in the Vacuum Leak Test Log (Annexure-2).
5.3.2. Pressure Decay Test
- Pressurize the aerosol can to standard pressure.
- Monitor for any pressure loss over a defined period.
- Record findings in the Pressure Decay Test Log (Annexure-3).
5.3.3. Water Bath Test
- Immerse filled aerosol cans in a warm water bath (50°C).
- Observe for any bubble formation indicating a leak.
- Record findings in the Water Bath Test Log (Annexure-4).
5.3.4. Dye Penetration Test
- Apply dye solution to suspected leak points.
- Inspect under UV light for leakage indications.
- Record results in the Dye Penetration Test Log (Annexure-5).
5.4. Acceptance Criteria
- No pressure loss in vacuum or pressure decay tests.
- No bubble formation in the water bath test.
- No dye leakage in the dye penetration test.
5.5. Handling of Failed Units
- Segregate and label all failed units.
- Record failures in the Rejected Container Log (Annexure-6).
- Investigate root causes and implement corrective actions.
6. Abbreviations
- GMP: Good Manufacturing Practice
- QA: Quality Assurance
- QC: Quality Control
- SOP: Standard Operating Procedure
7. Documents
- Equipment Calibration Log (Annexure-1)
- Vacuum Leak Test Log (Annexure-2)
- Pressure Decay Test Log (Annexure-3)
- Water Bath Test Log (Annexure-4)
- Dye Penetration Test Log (Annexure-5)
- Rejected Container Log (Annexure-6)
8. References
- Good Manufacturing Practice (GMP) Guidelines
- ISO 9001 – Quality Management Systems
- FDA Aerosol Packaging Regulations
9. SOP Version
Version: 2.0
10. Approval Section
| Prepared By | Checked By | Approved By | |
|---|---|---|---|
| Signature | |||
| Date | |||
| Name | |||
| Designation | |||
| Department |
11. Annexures
Annexure-1: Equipment Calibration Log
| Equipment Name | Calibration Date | Performed By | Next Due Date |
|---|---|---|---|
| Vacuum Chamber | 05/02/2025 | Rahul Mehta | 05/08/2025 |
Annexure-2: Vacuum Leak Test Log
| Batch No. | Test Date | Result | Checked By |
|---|---|---|---|
| BN-125 | 06/02/2025 | Pass | Priya Sharma |
12. Revision History:
| Revision Date | Revision No. | Revision Details | Reason for Revision | Approved By |
|---|---|---|---|---|
| 01/01/2024 | V 1.0 | Initial Release | First Issue | Anjali Sharma |
| 01/01/2025 | V 2.0 | Updated testing methods and acceptance criteria | GMP Compliance | Anjali Sharma |