bulk injectable products held temporarily during sterile manufacturing within designated intermediate storage tanks or vessels in the sterile area.

3. Responsibilities

• Manufacturing Operator: Transfers and stores bulk solutions per batch record and SOP instructions.
• Supervisor: Monitors and documents storage conditions and timelines.
• QA Officer: Verifies adherence to storage specifications and performs line clearance.
• Engineering: Ensures calibration and maintenance of storage vessels and monitoring equipment.

4. Accountability

The Head of Manufacturing is accountable for ensuring that all bulk injectable materials are stored under validated conditions and within defined hold times, as per the product-specific requirements.

5. Procedure

5.1 Preparation for Storage

1. Ensure the bulk solution transfer line is sterilized and integrity-verified.
2. Verify the receiving vessel (e.g., intermediate storage tank) has been cleaned and sterilized per SOP/SIM/032/2025.
3. Affix status label on the vessel indicating “Ready for Use.”

5.2 Transfer and Storage

1. Transfer bulk injectable solution under Grade A/B environment using aseptic technique.
2. Document the start and end time of transfer in the Bulk Transfer Log (Annexure-1).
3. Ensure storage temperature is maintained between 20°C to 25°C (unless product-specific range is defined).
4. Seal all ports and cover with sterile caps post-transfer.

5.3 Storage Monitoring

1. Monitor and record the vessel temperature every 30 minutes during hold time (Annexure-2).
2. QA shall review temperature logs for compliance during batch record review.
3. If any deviation is observed in temperature or seal integrity, initiate deviation report immediately.

5.4 Time Limit for Hold

1. The maximum hold time must not exceed the time established in the process validation report or product master formula (e.g., 48 hours).
2. Document start and expiry of hold time on the Batch Manufacturing Record (BMR).
3. QA must authorize further processing if time limits are about to lapse.

5.5 Post-Storage Processing

1. Verify all conditions (temp, duration, microbial limits) before proceeding to the filling stage.
2. Use dedicated transfer lines to move the solution to the filling machine under aseptic conditions.
3. Clean and sterilize intermediate vessels after each batch cycle and document in the Equipment Cleaning Log.

6. Abbreviations

• SOP: Standard Operating Procedure
• BMR: Batch Manufacturing Record
• QA: Quality Assurance
• GMP: Good Manufacturing Practice
• WHO: World Health Organization

7. Documents

1. Bulk Transfer Log – Annexure-1
2. Temperature Monitoring Log – Annexure-2
3. Storage Hold Time Verification Sheet – Annexure-3

8. References

• WHO TRS 961: GMP for Sterile Pharmaceutical Products
• EU GMP Annex 1
• ICH Q7: Good Manufacturing Practice Guidance

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: Bulk Transfer Log

Date	Batch No.	Start Time	End Time	Transferred By	Verified By (QA)
18/06/2025	IV-4521	10:00	10:35	Manoj Kumar	Neha Shah

Annexure-2: Temperature Monitoring Log

Date	Time	Temperature (°C)	Checked By	Remarks
18/06/2025	10:30	22.1	Anjali Sinha	Within Range
18/06/2025	11:00	21.9	Anjali Sinha	Within Range

Annexure-3: Storage Hold Time Verification Sheet

Batch No.	Hold Start Time	Hold End Time	Duration (Hours)	Verified By
IV-4521	10:35	22:35	12	Sunita Reddy

Revision History

Revision Date	Revision No.	Details	Reason	Approved By
10/02/2022	1.0	Initial release	New SOP	QA Head
18/06/2025	2.0	Added hold time verification table and updated monitoring log	Annual Review	QA Head