European Food Contact Polymer Migration Limit Determination
European food contact compliance requires validating overall and specific migration limits using designated simulants, geometric ratios, and traceable dossiers.
Fat Consumption Reduction Factor
Meaning
Correction factors applied in chemical migration testing adjust calculated lipophilic substance transfers based on actual human dietary intake of fatty foods. The fat consumption reduction factor divides measured migration values derived from fatty food simulants by a factor between one and five when evaluating compliance of plastic food contact materials. This regulatory calculation accounts for the observation that consumers ingest smaller daily masses of specific high-fat foods compared to total diet intake.
The factor governs compliance evaluations for lipophilic additives in plastic packaging, applying exclusively to specific migration testing and stopping where overall migration limits or infant formula packaging are evaluated.
Simulant Correction
Testing plastic barrier materials with fatty food simulants like vegetable oil or ethanol solutions often extracts higher additive quantities than typical food contact conditions. Applying the fat consumption reduction factor reduces the nominal migration value to reflect realistic dietary intake. A measured migration concentration of two milligrams per kilogram is reduced to one milligram per kilogram when a factor of two applies.
Regulatory Calculation
Specific mathematical rules define when correction factors apply based on food categories. Certain fatty food contact applications do not permit reduction factors if actual consumption data indicates elevated exposure.
Compliance Boundary
Substance migration must remain below established health threshold values even after mathematical reduction. Polymer compounders cannot use the fat consumption reduction factor to pass unstable resin formulations containing excess unreacted monomer or degraded antioxidants. Regulators prohibit applying reduction factors to articles designed for infant food contact because conservative safety margins must be preserved without correction.