and HVAC zoning integrity.

Microbiology Team: Conduct environmental monitoring and swab testing for residues.

4. Accountability

The Head – Manufacturing is accountable for the effective implementation of cross-contamination control procedures across all manufacturing operations.

5. Procedure

5.1 Identification of Contamination Risks

1. Review the formulation characteristics (e.g., color, odor, API potency, solubility) to identify high-risk materials.
2. Identify high-alert APIs, allergens, hormones, or sensitizers.
3. Classify products based on cleaning challenge categories (e.g., Low, Medium, High).

5.2 Facility and Equipment Design Controls

1. Ensure separation of operations using dedicated areas or unidirectional product flow.
2. Utilize airlocks and differential pressure to maintain HVAC zoning integrity.
3. Design equipment with smooth surfaces, easy-to-clean components, and minimal hold-up volume.

5.3 Cleaning and Line Clearance

1. Perform cleaning as per SOP/GM/088/2025 and cleaning validation protocols.
2. Verify cleanliness using swab tests, rinse tests, and visual inspection.
3. Complete and document line clearance before switching products (Annexure-1).

5.4 Personnel Practices

1. Ensure gowning procedures as per SOP/QA/016/2025.
2. Prohibit movement of operators between rooms processing different products without decontamination.
3. Train personnel on contamination risks and hygiene SOPs every 6 months.

5.5 Environmental Monitoring

1. Conduct routine environmental monitoring (air, surface, equipment) as per risk-based schedule.
2. Record microbial counts, airborne particulate levels, and presence of cleaning agents.
3. Escalate if contamination exceeds alert/action limits defined in Annexure-2.

5.6 Material and Waste Handling

1. Segregate raw materials and semi-finished goods with clear labels and designated storage zones.
2. Dispose of rejected or spilled material immediately following SOP/EHS/021/2025.

5.7 In-Process and Final Batch Controls

1. Use dedicated or validated shared equipment for each product.
2. Include cross-contamination checks as part of in-process QA checkpoints.
3. Test the final product for presence of unintended APIs (if required).

6. Abbreviations

• GMP: Good Manufacturing Practice
• API: Active Pharmaceutical Ingredient
• HVAC: Heating, Ventilation, and Air Conditioning
• QA: Quality Assurance
• SOP: Standard Operating Procedure

7. Documents

1. Cleaning Validation Protocol – Annexure-1
2. Environmental Monitoring Log – Annexure-2
3. Line Clearance Checklist – Annexure-3
4. Deviation/Contamination Incident Report – Annexure-4

8. References

• ICH Q7 – GMP for Active Pharmaceutical Ingredients
• WHO TRS 986 Annex 2 – GMP for Pharmaceuticals
• Schedule M – Good Manufacturing Practices (India)

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: Cleaning Validation Protocol

Contains the product-specific cleaning limits, test methods, and sampling points for shared equipment.

Annexure-2: Environmental Monitoring Log

Date	Area	Test Performed	Result	Limit	Remarks

Annexure-3: Line Clearance Checklist

Item	Status	Checked By	QA Verified
Previous Labels Removed
Product Contact Surfaces Cleaned

Annexure-4: Contamination Incident Report

Form to document the nature, extent, root cause, corrective and preventive action of contamination-related events.

Revision History

Revision Date	Revision No.	Description of Change	Reason	Approved By
04/04/2022	1.0	Initial version	New SOP release	QA Head
09/06/2025	2.0	Enhanced sections for risk assessment and incident reporting	Compliance with WHO TRS	QA Head