Preservative Efficacy Test
(also called a PET or Challenge Test)
Demonstrating the effectiveness of your product’s preservative system is likely to be a regulatory requirement. A preservative efficacy test is the best way to do this. The testing determines whether specific organisms that we add to your product are suitably reduced in number over time.
The most frequently requested version of this test is that of the European Pharmacopoeia.
For further information and technical details please see our Technical Information.