Education Labs Toxicology

Do I need a Preservative Efficacy Test?

The law requires a Preservative Efficacy Test to be performed on some products, do you need one?

When do I need 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

 

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