Preservative Efficacy Test
Preservative efficacy testing determines the effectiveness of a preservative during its shelf life and evaluates how well a product withstands microbial contamination during use. For example, in the case of sterile vials containing multiple doses, antimicrobial preservatives are used to inhibit the growth of any microorganisms that may be introduced during repeated insertion and withdrawal to load individual doses.
Preservative efficacy testing can also be used to determine the best preservative to use in your formulation and the minimum effective concentration of that particular preservative needed to preserve the pharmaceutical, food, or biotechnology product being assessed. Note that the minimum effective concentration of a preservative should be well below any concentration level that is toxic to humans.
Our Tests
M404
USP Preservative Efficacy Test
Sample Submission
Purchase Order
In line with current ISO/QSR purchasing requirements, all orders should be sent with a signed completed Purchase Order. This will help expedite the processing or your order. Standing Purchase Orders will be gladly accepted for routine continuing orders.
Sample Submission Form
Please download and fill out a Test Request Form for each sample/test submitted. Identify each submission clearly and completely. Please be specific with the description, Lot Number, PO etc. and specify the test desired. Please indicate the Test Code Number on the form also. This will greatly reduce turnaround time necessary to generate an accurate, final report.
Final Reports
Upon completion of test, a final report will be issued and all records and raw data will be held for five years.
Related Articles
USP 81 Turbidimetric Testing For Antimicrobial Medical Products
Learn about turbidimetric testing and zone of inhibition testing for agents, materials, and coatings on or within medical devices or products.
Qualitative Equivalency Methods For Microbiological Testing
Learn calculations and most probable number equations for alternative method equivalency testing for microbiological testing and medical product testing.
USP 81 Zone of Inhibition Testing For Antimicrobial Medical Products
Learn about the USP 81 zone of inhibition test for antimicrobial agents, materials, and coatings on or within medical products and cylinder-plate assays.
