Posted by Dan on 1st Jan 2021

Do I need a Preservative Efficacy Test?

When do I need Preservative Efficacy Test (PET)?

If your product contains water you will require a Preservative Efficacy Test to check the microbial quality of your product.

The occasions you will not require a Preservative Efficacy test are:

  • Your product contains less than 5% water (including floral waters etc.)
  • Your product has a pH of 10 or more or 2 or less