| abstract |
A method and means to establish and maintain a micro-biologically clean environment in rooms, at which ceilings, wall surfaces and eventually other surfaces in a room, preferably after a preceding sanitation, are coated with a layer of a composition of materials which is porous, open for diffusion and preventing condensation, including granules of organic or expanded inorganic materials and binders, and at which a water soluble sanitation liquid is spread on the porous composition of materials at repeated intervals of time, at which the composition of materials remains a sanitizer in the pore system of the composition of materials as its water is evaporated. |