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Gel Manufacturing: SOP for Dispensing Preservatives for Gel Formulations – V 2.0

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Gel Manufacturing: SOP for Dispensing Preservatives for Gel Formulations – V 2.0

Standard Operating Procedure for Dispensing Preservatives in Gel Manufacturing


Department Gel Manufacturing
SOP No. SOP/GM/007/2025
Supersedes SOP/GM/007/2022
Page No. Page 1 of 13
Issue Date 02/06/2025
Effective Date 04/06/2025
Review Date 02/06/2026

1. Purpose

To define the procedure for the accurate and safe dispensing of preservatives used in gel formulations to ensure microbial stability and product integrity while maintaining GMP compliance and traceability.

2. Scope

This SOP applies to

all preservative dispensing activities carried out in the Gel Manufacturing Department for topical gel formulations. It includes commonly used preservatives such as methylparaben, propylparaben, benzyl alcohol, and phenoxyethanol.

3. Responsibilities

  • Dispensing Operator: Handles the materials as per the procedure and performs weighing and labeling.
  • Supervisor: Verifies the materials, weighing quantity, and ensures proper documentation.
  • QA Officer: Performs area clearance, approves weighed material, and ensures compliance.

4. Accountability

The Head of Manufacturing is accountable for ensuring adherence to this SOP and that the dispensing of preservatives is executed under GMP-controlled conditions.

See also  Gel Manufacturing: SOP for Weighing Micro Quantities of APIs for Gels - V 2.0

5. Procedure

5.1 Pre-Dispensing Checks

  1. Ensure that the material requisition form is approved by production and QA.
  2. Check that the selected preservative is within its shelf-life and has a valid Certificate of Analysis (CoA).
  3. Perform area clearance and line cleaning before starting the dispensing process.

5.2 Environmental Requirements

  1. Maintain room temperature at 20–25°C and relative humidity below 50%.
  2. Ensure the dispensing area is free from foreign substances and equipped with calibrated weighing balances.

5.3 Weighing Process

  1. Collect the material container from the approved storage area and verify:
    • Material name and code
    • Batch number
    • Quantity
    • Label status (“Approved” by QA)
  2. Place a clean and tared container on the balance and dispense the preservative as per the quantity defined in the Batch Manufacturing Record (BMR).
  3. Record the actual weighed quantity, balance ID, and operator details in the Preservative Dispensing Log (Annexure-1).

5.4 Handling and Safety

  1. Use appropriate PPE such as gloves, mask, and goggles while handling preservatives.
  2. Handle volatile preservatives under fume hoods or laminar airflow units to minimize exposure.
  3. Immediately close the material container after dispensing to prevent contamination and evaporation.
See also  Gel Manufacturing: SOP for Viscosity Testing of Gel Formulations - V 2.0

5.5 Labeling and Cross-Verification

  1. Label the dispensed container with:
    • Preservative name and code
    • Batch number
    • Quantity dispensed
    • Date and initials
  2. The Production Supervisor must cross-check all information and sign the Verification Sheet (Annexure-2).

5.6 QA Approval and Release

  1. QA to inspect the labeled container and confirm the following:
    • Correct labeling and traceability
    • No signs of spillage, degradation, or contamination
  2. Release the dispensed material by signing the Approval and Release Form (Annexure-3).

5.7 Documentation and Records

  1. Attach all relevant records (CoA, logbook, verification sheet, and release form) to the BMR.
  2. Ensure all entries are completed in ink, signed, and dated by responsible personnel.
  3. Correct errors by striking through with a single line and providing proper justification.

6. Abbreviations

  • SOP: Standard Operating Procedure
  • QA: Quality Assurance
  • CoA: Certificate of Analysis
  • BMR: Batch Manufacturing Record

7. Documents

  1. Preservative Dispensing Log – Annexure-1
  2. Verification Sheet – Annexure-2
  3. Approval and Release Form – Annexure-3
See also  Gel Manufacturing: SOP for Production of Thermosensitive Gels - V 2.0

8. References

  • WHO GMP Guidelines
  • ICH Q7 – Good Manufacturing Practices for Active Pharmaceutical Ingredients
  • Schedule M – Indian GMP Requirements

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: Preservative Dispensing Log

Date Preservative Batch No. Quantity Weighed By
02/06/2025 Methylparaben MP0525 0.5 kg Rajesh Kumar

Annexure-2: Verification Sheet

Item Observation Verified By Date
Material Name Correct Sunita Reddy 02/06/2025
Batch Number Matched Sunita Reddy 02/06/2025
Quantity Verified Sunita Reddy 02/06/2025

Annexure-3: Approval and Release Form

Preservative Methylparaben
Batch No. MP0525
Released Quantity 0.5 kg
Approved By QA Officer
Date 02/06/2025

Revision History:

Revision Date Revision No. Details Reason Approved By
01/01/2022 1.0 Initial SOP Release New SOP QA Head
02/06/2025 2.0 Added Annexures and enhanced safety section Annual Review QA Head
Gels V 2.0 Tags:gel excipients SOP, gel extrudability SOP, gel formulation process guidelines, gel formulation safety SOP, gel formulation SOP template, gel homogenization SOP, gel ingredient weighing SOP, gel labeling and documentation SOP, gel microbial contamination SOP, gel packaging SOP, gel viscosity measurement SOP, gel viscosity testing SOP, pharmaceutical gel SOP, quality control SOP gel formulations, SOP for carbopol gel formulation, SOP for gel pH adjustment, SOP for gel spreadability test, stability testing SOP gel, standard operating procedure gel preparation, topical gel manufacturing SOP

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Standard Operating Procedures V 1.0

  • Aerosols
  • Analytical Method Development
  • Bioequivalence Bioavailability Study
  • Capsule Formulation
  • Clinical Studies
  • Creams
  • Data Integrity
  • Dental Dosage Forms
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  • Powder & Granules
  • Purchase Departments
  • Quality Assurance
  • Quality Control
  • Raw Material Stores
  • Regulatory Affairs
  • Tablet Manufacturing
  • Rectal Dosage Forms
  • Transdermal Patches
  • Vaginal Dosage Forms
  • Validations and Qualifications

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NEW! Revised SOPs – V 2.0

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