An “FDA Approval” can only be issued for a product generated in the particular facility in question. For components and materials there is no FDA approval; these parts are “FDA listed” in terms of their innocuousness if in direct contact with the product.
The FDA directives are published as so-called “Codes of Federal Regulations” (CFR…). The 21 CFR 170-199 directives have a special significance, in particular with regard to material selction for sensor manufacturers. They contain a listing of specifiations for plastics. Thus, 21 CFR 177.2415, for example, contains the plastic PEEK that is often used in the food and pharmaceutical market sectors.
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