There are many toxins that can migrate from materials and containers that enter into contact with foodstuffs.
Depending on the material's characteristics, composition and conditions of use, AENORlaboratorio's technical team designs the tests to be carried out, defining the required stimulant and test conditions, and collaborates with our customers in issuing the declaration of conformity.
Global migration testing of chemical substances is carried out using procedures established in the UNE 1186 series of standards, and it provides us the global value of non-volatile substances transferred from the material to the food.
This procedure gives us the value of the migration of a specific substance transferred from the material to the food. With regard to the specific migration, we must take into account the analysis of heavy metals, aromatic amines and all substances that are part of the composition of the material under study.
Test conditions are established by the conditions of use set for the tested material, and they are selected by AENORlaboratorio technicians when designing the study. The legislation establishes
9 test conditions that cover different temperatures and contact times that can appear in actual conditions.
NIAS are substances that can be present in a material but which have not been added voluntarily during the manufacturing process, and therefore their presence is unknown (Non-intentionally added substances).
The NIAS can originate from a wide range of sources: impurities from raw materials, by-products that are formed during polymerisation, degradation processes that occur during manufacturing and the material's storage, the contact with foodstuffs, etc.
The identification, study and classification of these substances requires a combination of screening analytical techniques and toxicological studies, with the aim of learning about the effects that the exposure to these substances can have on human health.
EU Recommendations for packaging and materials
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