What happens to the catalysts used in manufacture of PET, are they hazardous?

The metal-based catalysts used in PET manufacture are present at very low levels, typically less than 250 parts per million (ppm), and are chemically locked into the PET structure.  Repeated extraction tests with food simulants at normal use conditions show that the amount of extractables is well below any legal limits; moreover, the extractables are neither toxic nor hazardous.