SOP Guide for Pharma

Gel Manufacturing: SOP for Visual Inspection of Gel-Filled Tubes – V 2.0

Gel Manufacturing: SOP for Visual Inspection of Gel-Filled Tubes – V 2.0

Standard Operating Procedure for Visual Inspection of Gel-Filled Tubes in Gel Manufacturing


Department Gel Manufacturing
SOP No. SOP/GM/139/2025
Supersedes SOP/GM/139/2022
Page No. Page 1 of 10
Issue Date 09/06/2025
Effective Date 11/06/2025
Review Date 09/06/2027

1. Purpose

To establish a standard procedure for visual inspection of gel-filled tubes to ensure that the final product is free from defects and meets required quality standards.

2. Scope

This procedure applies to all batches of gel-filled tubes manufactured in the gel manufacturing department,

including those undergoing manual or automated inspection prior to packing and release.

3. Responsibilities

  • Inspection Operator: Conducts visual inspection as per defined parameters.
  • QA Executive: Verifies inspection activity, sampling, and rejects handling.
  • Production Supervisor: Ensures trained personnel are deployed and inspection is documented properly.

4. Accountability

Head – Manufacturing

5. Procedure

5.1 Preparation Before Inspection

  1. Ensure the inspection area is clean and well-illuminated as per 1000 Lux minimum requirement.
  2. Confirm line clearance and availability of required documents, labels, and rejection containers.
  3. Verify cleanliness and calibration of inspection table (Annexure-2: Visual Inspection Checklist).

5.2 Inspection Criteria

Inspect each gel tube for the following parameters:

  • Tube integrity: no dents, punctures, or leaks
  • Sealing: no open or uneven seals
  • Labeling: correct label placement, legibility, and batch details
  • Product fill: consistent and as per standard weight range
  • Appearance: no discoloration, phase separation, or foreign matter

5.3 Visual Inspection Method

  1. Inspect tubes under standard light, rotating gently for full surface check.
  2. Rejected tubes must be collected in a labeled ‘Rejected’ bin.
  3. Rejects must be segregated into categories: labeling issues, fill error, seal defect, physical damage.
  4. Document total inspected units and rejected units in Visual Inspection Record (Annexure-1).

5.4 Frequency and Sampling

  1. 100% inspection is required unless validated AQL sampling plan is approved.
  2. Sampling may be done post-primary inspection to confirm process performance.

5.5 Handling of Defects

  1. Rejected units should not be returned to the production line without QA disposition.
  2. Major defects should trigger batch review and QA investigation.
  3. Minor cosmetic defects may be reworked if allowed by SOP and product requirements.

6. Abbreviations

  • QA: Quality Assurance
  • AQL: Acceptable Quality Limit
  • SOP: Standard Operating Procedure

7. Documents

  1. Visual Inspection Record – Annexure-1
  2. Visual Inspection Checklist – Annexure-2
  3. Batch Manufacturing Record (BMR)

8. References

  • WHO GMP Guidelines for Visual Inspection
  • Schedule M: Good Manufacturing Practices for Pharmaceuticals
  • Internal Quality Manual

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: Visual Inspection Record

Date Batch No. Total Inspected Total Rejected Defect Type Operator Remarks

Annexure-2: Visual Inspection Checklist

Inspection Area Criteria Status (Y/N) Remarks
Lighting 1000 Lux Min
Table Cleanliness No Dust, Debris
Rejected Bin Present and Labeled

Revision History

Revision Date Revision No. Change Description Reason Approved By
15/02/2022 1.0 Initial Issue New SOP QA Head
09/06/2025 2.0 Updated inspection steps and defect classification Annual Review QA Head
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