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  PET results

  Posted by GabyD on September 13, 2019 at 2:17 am

  Hello, I’ve just received my Day 17 PET results. Can I ask what you would think if you got these results? Many thanks.

  

  EVchem replied 5 years, 7 months ago 4 Members · 3 Replies
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• 

  ozgirl

  Member

  September 16, 2019 at 11:18 pm

  I would think that you need to improve the preservation system in your day and night creams.

  If you can post your formulations for those products you might get some suggestions for how to improve them.
• 

  OldPerry

  Professional Chemist / Formulator

  September 17, 2019 at 12:45 pm

  What is the “contaminated sample”?

• 

  EVchem

  Member

  September 17, 2019 at 1:01 pm

  I am still learning in this field but PET is about seeing a logarithmic reduction  over time- not necessarily about killing everything. A USP monograph would probably contain all the details on this.  Are you only testing your system against mold?

  These results are presented a little differently than what I’ve seen, here’s an example of results we’ve gotten in the past.

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