Food Contact Material Compliance
This calculation predicts the mass transfer of a migrant from a planar membrane into a food simulant to screen for compliance with Specific Migration Limits (SML). It uses a short-time approximation of Fick's Second Law for unsteady-state diffusion.
📖 Need the theory? Read the methodology, assumptions, and equations in the full reference guide.
1. Define Input Parameters
2. Engineering Output
Contact area in m² (A_m2)
- m²
- m²
Characteristic diffusion time (tau)
- s
- s
Short-time validity threshold (t_valid)
- s
- s
Migrated mass (M_kg)
- kg
- kg
Migrated mass in mg (M_mg)
- mg
- mg
Specific migration (Migration_spec)
- mg/kg
- mg/kg
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Download Offline Excel CalculationContext & Assumptions
The migration of chemical substances from polymeric packaging into food is a critical safety concern, regulated by frameworks like EU 10/2011. This calculation serves as a first-tier screening tool during material development to predict migrant mass transfer. It helps ensure packaging formulations meet safety compliance before costly laboratory testing.
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