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