Abstract: The present invention relates to a porous material for inclusion of cytological preparations such as for example the material taken from procedures of fine needle aspiration with high effectiveness level. The effectiveness consists in quantitative and qualitative advantages: the proposed porous material has a high affinity for the cellular material which is captured and kept in the meshes by forming a kind of tissue without losing cellular elements thus with a quantitative advantage with respect to the traditional methods. Moreover, the material proposed in the patent is provided with wide cells delimited by thin meshes, this allows a wide diffusion of the fixative by optimizing the morphology preservation of the cytological sample; such qualitative advantage translates into optimum yield of the ancillary methods for studying the pathology.