Standard Operating Procedure for Use of Preservatives in Gels Production
1) Purpose
The purpose of this SOP is to outline the procedures for selecting, handling, and incorporating preservatives in gel formulations to ensure the product remains free from microbial contamination throughout its shelf life.
2) Scope
This SOP applies to all personnel involved in the production of gels using preservatives within the pharmaceutical manufacturing facility.
3) Responsibilities
Formulation Scientists: Select appropriate preservatives and provide guidance on their use.
Production Operators: Handle and incorporate preservatives according to this SOP.
Quality Control (QC) Analysts: Test the efficacy and quality of gels containing preservatives.
Quality Assurance (QA) Team: Review and approve procedures and results related to the use of preservatives.
4) Procedure
4.1 Selection of Preservatives
4.1.1 Choose preservatives based on their efficacy against a broad spectrum of microorganisms and compatibility with other formulation components.
4.1.2 Ensure selected preservatives comply with regulatory requirements and product specifications.
4.2 Handling of Preservatives
4.2.1 Store preservatives according to manufacturer’s recommendations to maintain their efficacy.
4.2.2 Use appropriate personal protective equipment (PPE) when handling preservatives.
4.3 Incorporation of Preservatives
4.3.1 Accurately weigh the required amount of preservative using a calibrated
4.3.2 Add the preservative to the formulation at the appropriate stage to ensure even distribution.
4.3.3 Mix thoroughly to achieve a homogeneous dispersion of the preservative in the gel.
4.4 Quality Control Testing
4.4.1 Conduct preservative efficacy testing (e.g., microbial challenge testing) to ensure the gel remains free from contamination over its shelf life.
4.4.2 Perform regular microbial testing on production batches to confirm ongoing effectiveness of the preservative.
4.5 Documentation
4.5.1 Record batch numbers, quantities, and lot numbers of preservatives used in production.
4.5.2 Maintain records of QC tests and preservative efficacy studies.
5) Abbreviations, if any
SOP: Standard Operating Procedure
PPE: Personal Protective Equipment
QC: Quality Control
QA: Quality Assurance
6) Documents, if any
– Batch Production Records
– QC Testing Records
– Preservative Efficacy Testing Reports
7) Reference, if any
– USP General Chapter <51> Antimicrobial Effectiveness Testing
– ICH Q7: Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients
– Company-specific guidelines on the use of preservatives
8) SOP Version
Version 1.0
