Resistenza alle macchie delle piastrelle ceramiche - Resistance to stains of ceramic tiles.

Stain resistance of ceramic tiles is one of the most difficult requirements to meet due to complex chemical and physical interactions that take place between the staining agents and the surface of the tile, both at the time of staining and during cleaning. Moreover, an extremely wide range of substances are capable of staining the tile surface by means of different mechanisms. Some of the characteristics of the tile surface may also change during use, due to abrasion, chemical attack, etc.