SOP Guide for Pharma

Sterile Injectable Manufacturing: SOP for Checking Sealing Integrity during Filling Process – V 2.0

Sterile Injectable Manufacturing: SOP for Checking Sealing Integrity during Filling Process – V 2.0

Standard Operating Procedure for Checking Sealing Integrity during Filling Process


Department Sterile Injectable Manufacturing
SOP No. SOP/SIM/075/2025
Supersedes SOP/SIM/075/2022
Page No. Page 1 of 13
Issue Date 18/06/2025
Effective Date 20/06/2025
Review Date 18/06/2026

1. Purpose

To define the step-by-step procedure for checking and verifying the integrity of container sealing during the sterile filling process to prevent contamination, product leakage, and ensure compliance with cGMP requirements.

2. Scope

This SOP applies to all sterile injectable containers including

vials, ampoules, and prefilled syringes that are sealed during the filling process in Grade A/B classified environments at [Company Name].

3. Responsibilities

  • Filling Machine Operator: Performs sealing operation and initial checks.
  • IPQA Officer: Verifies sealing integrity and documents observations.
  • Engineering Officer: Ensures machine sealing parameters are calibrated and maintained.

4. Accountability

The Head – Quality Assurance is accountable for ensuring proper implementation and compliance with this SOP.

5. Procedure

5.1 Preparation for Sealing Integrity Checks

  1. Ensure that sealing equipment is cleaned and sterilized before the start of operation.
  2. Verify that sealing parameters (e.g., temperature, pressure, time) are set as per the validated batch parameters.
  3. Ensure the presence of IPQA personnel before sealing begins.

5.2 In-Process Sealing Integrity Check

  1. Conduct sealing integrity checks at defined intervals (e.g., every 30 minutes or every 100 units).
  2. Inspect for the following:
    • Uniformity of seal
    • Presence of crimping defects
    • Any signs of leakage or gaps
    • Correct positioning of aluminum cap (vials) or plunger (syringes)
  3. Perform leak test using vacuum or dye ingress method where applicable (especially for ampoules).
  4. Record the inspection results in the Sealing Integrity Logbook (Annexure-1).

5.3 Handling of Defects

  1. Any unit failing the integrity check must be segregated and documented as rejected.
  2. Investigate cause and check previous 10 sealed units if a defect is detected.
  3. If a trend of rejection is observed, stop the line and inform QA and engineering.

5.4 Post-Batch Integrity Evaluation

  1. IPQA to select samples from the beginning, middle, and end of the batch for final sealing integrity checks.
  2. Document results and include in the Batch Manufacturing Record (BMR).

5.5 Frequency of Monitoring

  1. Initial line clearance check
  2. Every 30 minutes during filling
  3. Post-batch summary check
  4. During changeovers

6. Abbreviations

  • SOP: Standard Operating Procedure
  • IPQA: In-Process Quality Assurance
  • BMR: Batch Manufacturing Record
  • cGMP: Current Good Manufacturing Practices

7. Documents

  1. Sealing Integrity Logbook – Annexure-1
  2. Sealing Parameter Checklist – Annexure-2
  3. Defect Observation Report – Annexure-3

8. References

  • 21 CFR Part 211 – CGMP for Finished Pharmaceuticals
  • ICH Q8 – Pharmaceutical Development
  • WHO TRS 961 Annex 6 – GMP for Sterile Products

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: Sealing Integrity Logbook

Date Time Batch No. Checked By Observation Remarks
18/06/2025 10:30 AM VIAL-BT-2305 Sunita Reddy No Defects Complies

Annexure-2: Sealing Parameter Checklist

Parameter Set Value Observed Value Status
Sealing Temperature 120°C 121°C OK
Sealing Pressure 25 psi 25 psi OK

Annexure-3: Defect Observation Report

Date Batch No. Defect Observed Corrective Action Performed By
18/06/2025 VIAL-BT-2305 Crimping Misalignment Tool adjusted, 10 units rechecked Rajesh Kumar

Revision History

Revision Date Revision No. Details Reason Approved By
01/01/2022 1.0 Initial Release New SOP QA Head
18/06/2025 2.0 Updated frequency and annexure templates Annual Review QA Head
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