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The FDA has factors of reduction accounting for:
the frequency of a packing on the market.
nature of the food (A, B, C, D)
frequency of this type of food in packing
(e.g. PET-water)
frequency of each material on the market
US
EU
Polymer
consumption factor
CF
estimate of daily intake
(mg
day
-1
person
-1
)
ratio of
EU/FDA
estimates
Polyolefines
0.35
2.50
7.7
3.1
Polystyrene
0.1
0.72
7.7
10.8
EVA
0.02
0.065
7.7
119.0
PVC
0.1
1.13
7.7
6.8
PET
0.21
0.048
7.7
158.7
Cellophane
0.01
0.21
7.7
35.8
Nylon
0.02
0.35
7.7
22.2
US vs EU POLICY: e.g. migration of monomers
Currently, the conventional assessment of consumer
exposure by risk managers is independent of these criteria.