hello
i have a question related to validation and usage of the metal detector
I have a supplier who uses metal detector for their bakery products . They use the metal detector in unusal way ( in my opinion) , they pack the product in premary packaging ( plastic wrap) and than arrange the product in a secondary package ( carton box) and then they are passing it through the metal detector
While they do verification daily 3 times they pass the test strips by placing it on the top or side of the secodnary packaging (OUTSIDE) not inside the of the box
my question was what is the correct way to validate such process and what is the correct way to verify it the dame on day to day basis