mixing and homogenization steps at the gel manufacturing facility.

3. Responsibilities

• Process Validation Executive: Prepares protocol and oversees execution of validation batches.
• Production Supervisor: Ensures correct operation of mixing and homogenizing equipment.
• QC Analyst: Conducts analytical testing on validation samples.
• QA Executive: Reviews validation results and authorizes final reports.

4. Accountability

Head – Manufacturing

5. Procedure

5.1 Preparation of Validation Protocol

1. Develop a validation protocol with the following elements:
   • Objective and scope
   • Equipment details and calibration status
   • Process flow and critical parameters
   • Sampling plan and analytical methods
   • Acceptance criteria and statistical analysis plan
2. Get protocol reviewed and approved by QA and Regulatory Affairs.

5.2 Execution of Validation Batches

1. Conduct at least three consecutive commercial-scale batches using standard mixing and homogenization parameters.
2. Capture all equipment settings including:
   • Mixing speed and time
   • Homogenization RPM and duration
   • Temperature and vacuum settings (if applicable)

5.3 In-Process Monitoring

1. Collect samples from different mixer zones (top, middle, bottom) after mixing and after homogenization.
2. Test for parameters such as:
   • API content uniformity
   • Viscosity
   • pH
   • Appearance and homogeneity

5.4 Data Evaluation

1. Evaluate intra-batch and inter-batch uniformity through statistical tools (e.g., %RSD, ANOVA).
2. Verify that results meet the pre-defined acceptance criteria.

5.5 Documentation and Reporting

1. Compile raw data, observations, equipment logs, and test results into the validation report.
2. Get the report reviewed by QA and approved by the Head – Manufacturing.
3. Archive validated parameters as reference for routine production.

6. Abbreviations

• API: Active Pharmaceutical Ingredient
• QA: Quality Assurance
• QC: Quality Control
• RSD: Relative Standard Deviation

7. Documents

1. Validation Protocol – Annexure-1
2. Validation Execution Record – Annexure-2
3. Validation Report – Annexure-3
4. Batch Manufacturing Records

8. References

• ICH Q8(R2): Pharmaceutical Development
• FDA Process Validation Guidance (2011)
• WHO TRS 1019: Process Validation Guidelines

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: Validation Protocol Format

Product Name
Batch Size
Mixing Parameters
Homogenization Parameters
Sampling Points
Test Parameters
Acceptance Criteria

Annexure-2: Execution Record

Batch No.	Date	Observation	Performed By	Reviewed By

Annexure-3: Validation Report Summary

Test	Result	Specification	Status

Revision History

Revision Date	Revision No.	Change Description	Reason	Approved By
18/05/2022	1.0	Initial SOP	New SOP	QA Head
02/06/2025	2.0	Added statistical analysis and expanded annexures	Annual Review	QA Head