Related Experiment Video
Updated: Jun 5, 2026
12:03
Antimicrobial Synergy Testing by the Inkjet Printer-assisted Automated Checkerboard Array and the Manual Time-kill Method
Published on: April 18, 2019
Comparison of compendial antimicrobial effectiveness tests: a review
Cheryl L Moser1, Brian K Meyer
1Merck & Co., 770 Sumneytown Pike, PO Box 4, West Point, Pennsylvania 19486, USA.
AAPS Pharmscitech
|January 12, 2011
Summary
A harmonized antimicrobial effectiveness test procedure is presented, satisfying all tripartite compendia requirements for sterile parenteral multi-dose products. This single test method streamlines preservative effectiveness evaluations across different regulatory standards.
Area of Science:
- Microbiology
- Pharmaceutical Sciences
- Regulatory Science
Background:
- The antimicrobial effectiveness test (AET) is crucial for sterile parenteral multi-dose products.
- Existing tripartite compendia (e.g., USP, Ph. Eur., JP) have harmonized test execution but not acceptance criteria.
- This lack of harmonized criteria complicates compliance for manufacturers.
Purpose of the Study:
- To describe a single antimicrobial effectiveness test procedure.
- To ensure the described procedure satisfies the acceptance criteria of all major tripartite compendia.
- To provide a unified approach for preservative effectiveness testing.
Main Methods:
- A detailed procedural description of a single AET is provided.
- The method's compatibility with inoculum preparation and test execution across compendia is highlighted.
- The procedure is designed to meet the distinct acceptance criteria of the USP, Ph. Eur., and JP.
Main Results:
- The proposed single test method procedurally satisfies all tripartite compendia.
- This unified approach allows for a single test execution to meet diverse regulatory requirements.
- It simplifies the process of demonstrating preservative effectiveness for sterile parenteral products.
Conclusions:
- A harmonized antimicrobial effectiveness test is achievable.
- Implementing this single test procedure can reduce testing redundancy and improve compliance efficiency.
- This approach supports global regulatory harmonization for pharmaceutical product safety.
Related Concept Videos
01:28Antimicrobial Effectiveness
The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
01:24Automated Microbial Diagnostics
Automated diagnostic analyzers have transformed clinical microbiology by providing rapid and reliable methods for pathogen identification and antibiotic susceptibility testing. Among these systems, the Vitek 2 is widely used because it automates the traditionally labor-intensive processes of microbial identification (ID) and antibiotic susceptibility testing (AST), delivering standardized and timely results that are essential for effective patient care.Microbial Identification with ID CardsThe...
01:13In Vitro Drug Dissolution: Compendial Testing Models I
Compendial dissolution methods are standardized procedures defined by pharmacopeias to evaluate the rate at which a drug dissolves in a specific medium. These methods ensure batch-to-batch consistency, enable quality control, and support the prediction of drug bioavailability. They are critical for both immediate and modified-release drug products.The apparatuses used for dissolution testing differ in their design and mechanical function, but all aim to simulate the physiological environment of...