Challenge Test/PET Test
Ph Eur 5.1.3. Efficacy Of Antimicrobial Preservation microbiological testing. (Also known as Challenge Test) Carrying out and reporting.
It involves challenging the product with a range of organisms to measure how quickly it clears them. This simulates the experience the product will have when launched onto the market.
This industry standard test is the gold standard for checking whether your product's preservative is up to the job.
The testing takes around six weeks to complete, and we supply a report that explains in plain language what the results indicate. The report contains the full details of the testing so can be included in your PIF file as evidence that your product is microbially safe.