THE POROUS CERAMIC TECHNOLOGY. The production methododology of Cobra is based on special colloidal filtration methodes, resulting in defined porous ceramic products with sharp pore size distribution, especially towards the higher tail of the Gauss-distribution curve. We can apply finer pore coatings on top of the hydrophilic ceramic discs with different ceramic membrane materials: gamma alumina, Titania, Silica, HybSi