Standard Operating Procedure for Monitoring Aseptic Conditions during Filling
| Department | Sterile Injectable Manufacturing |
|---|---|
| SOP No. | SOP/SIM/076/2025 |
| Supersedes | SOP/SIM/076/2022 |
| Page No. | Page 1 of 14 |
| Issue Date | 18/06/2025 |
| Effective Date | 20/06/2025 |
| Review Date | 18/06/2026 |
1. Purpose
To establish a procedure for monitoring and ensuring aseptic conditions during the sterile filling process to prevent microbial and particulate contamination, in compliance with GMP, WHO, and ICH guidelines.
2. Scope
This SOP is applicable to all Grade A and Grade
B cleanroom environments used for sterile injectable product filling operations at [Company Name].
3. Responsibilities
- Production Officer: Ensures adherence to aseptic behavior and filling process practices.
- IPQA Officer: Monitors environmental conditions and documents aseptic compliance.
- Microbiologist: Conducts viable/non-viable environmental monitoring and evaluates results.
4. Accountability
The Head – Quality Assurance is accountable for compliance with aseptic monitoring practices and documentation.
5. Procedure
5.1 Preparation for Filling
- Verify HVAC performance, HEPA airflow velocity, and pressure differentials.
- Ensure viable and non-viable monitoring instruments are calibrated and ready.
- Ensure personnel perform aseptic gowning as per SOP/SIM/022/2025.
5.2 Monitoring of Aseptic Conditions
- Monitor differential pressure between classified areas every hour and record (Annexure-1).
- Use a particle counter to record non-viable particle counts during filling at critical locations (e.g., near open vials, syringe tips).
- Perform settle plate and active air sampling at start, mid, and end of each batch at designated sampling points.
- Conduct surface sampling of gloves, gowns, and filling machine parts using RODAC plates.
5.3 Monitoring Personnel Practices
- Observe aseptic behavior, including:
- No rapid movements or excessive talking
- Proper use of hand disinfection
- Minimal personnel intervention inside Grade A zone
- Document non-compliance or observations in the Personnel Monitoring Log (Annexure-2).
5.4 Alert and Action Limits
- Refer to validated alert/action limits for:
- Non-viable particles (≥0.5 µm and ≥5 µm)
- CFU limits for settle/RODAC plates
- In case of excursions:
- Immediately inform QA
- Initiate deviation and investigation
5.5 Documentation
- Record all monitoring results in Environmental Monitoring Log (Annexure-3).
- Attach all results and logs in the Batch Manufacturing Record (BMR).
6. Abbreviations
- SOP: Standard Operating Procedure
- IPQA: In-Process Quality Assurance
- CFU: Colony Forming Units
- BMR: Batch Manufacturing Record
7. Documents
- Pressure Monitoring Log – Annexure-1
- Personnel Monitoring Log – Annexure-2
- Environmental Monitoring Log – Annexure-3
8. References
- WHO TRS 961 Annex 6: GMP for Sterile Pharmaceutical Products
- EU GMP Annex 1 – Manufacture of Sterile Medicinal Products
- 21 CFR Part 211
9. SOP Version
Version: 2.0
10. Approval Section
| Prepared By | Checked By | Approved By | |
|---|---|---|---|
| Signature | |||
| Date | |||
| Name | |||
| Designation | Manufacturing Executive | QA Executive | Head QA |
| Department | Production | Quality Assurance | Quality Assurance |
11. Annexures
Annexure-1: Pressure Monitoring Log
| Date | Room | Expected Pressure (mm WC) | Observed | Status |
|---|---|---|---|---|
| 18/06/2025 | Grade B | 15–20 | 18 | Acceptable |
Annexure-2: Personnel Monitoring Log
| Date | Name | Glove CFU | Gown CFU | Comments |
|---|---|---|---|---|
| 18/06/2025 | Sunita Reddy | 0 | 0 | Compliant |
Annexure-3: Environmental Monitoring Log
| Date | Location | Settle Plate CFU | RODAC CFU | Particle Count ≥0.5µm | Remarks |
|---|---|---|---|---|---|
| 18/06/2025 | Filling Zone | 0 | 0 | 320 | Within Limit |
Revision History
| Revision Date | Revision No. | Details | Reason | Approved By |
|---|---|---|---|---|
| 01/01/2022 | 1.0 | Initial Version | New SOP | QA Head |
| 18/06/2025 | 2.0 | Included new monitoring log formats and clarified gowning roles | Annual Review | QA Head |