PDE concept in cleaning validation

Production
1

Please guide me on PDE concept in cleaning validation.
i.e. what is PDE concept in cleaning validation and how it used?

2

PDE is Permitted Daily Exposure
Please go through the following link
https://apic.cefic.org/pub/APICCleaningValidationGuide-updateSeptember2016-final.pdf

3

thank you sir for guiding me.

4

Dear All,
As per APIC, the evaluation of rating,
What is cleaning method class and how it is designed
Thanks

5