A method for checking the composition of industrial products (2) which comprise a plurality of primary parts and have known features, wherein the known features reflect the production and/or packaging specifications, the method comprising the following operating steps:
- a tomography scan step, wherein, by means of a tomography apparatus (1) inserted in a production line (15), a computed tomography scan of the product (2) is performed and a virtual three-dimensional tomography model (8) of it is obtained, constituted of a plurality of voxels, each of which has its own constant density;
- and
- a step of computerised analysis of the virtual three-dimensional tomography model (8), for assessment of predetermined properties of the primary parts of the product (2) to which the virtual three-dimensional tomography model (8) corresponds, chosen between the position of one or more primary parts inside the product (2) and the total number of primary parts of a same type inside the product (2).