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30.10.2023 - Cosmetics

The Preservative Efficacy Test (PET) according to ISO 11930

The Preservative Efficacy Test (PET, Challenge Test) is mandatory for all cosmetic products according to Regulation (EC) No. 1223/2009. This test demonstrates the microbiological stability of a product and simulates contamination with selected test microorganisms:

Pseudomonas paraeruginosa (formerly Pseudomonas aeruginosa) ATCC 9027
Staphylococcus aureus ATCC 6538
Escherichia coli ATCC 8739
Candida albicans ATCC 10231
Aspergillus brasiliensis ATCC 16404

We are also happy to include additional microorganisms, such as Burkholderia cepacia or Pluralibacter gergoviae, in the test as well as microorganisms from customer isolates.