Abstract: A method for the disinfection of spaces and surfaces, including the steps of preparing a diffuser device equipped with a tank containing a liquid solution and nebulising means associated with the tank and designed for drawing out the liquid solution from the tank spraying it in the space, nebulising in the room a predetermined quantity of liquid solution for an interval of time and subsequent nebulising in the room a predetermined quantity of a liquid substance, different from the liquid solution and having a predetermined fragrance, following an interval of time.

Abstract: A fountain pen comprises a hollow barrel such as can be held by a user, a nib stably attached to one end of the hollow barrel, also an ink cartridge housed internally of the hollow barrel and having a given containment volume. The cartridge is connected to the nib by way of a feed through which ink flows to the nib, and deformable by expanding at least partially between a normally undeformed first configuration, and a deformed second configuration in which the containment volume created internally is greater than the containment volume in the undeformed configuration.

Abstract: A fountain pen comprises a hollow barrel such as can be held by a user, a nib stably attached to one end of the hollow barrel, also an ink cartridge housed internally of the hollow barrel and having a given containment volume. The cartridge is connected to the nib by way of a feed through which ink flows to the nib, and deformable by expanding at least partially between a normally undeformed first configuration, and a deformed second configuration in which the containment volume created internally is greater than the containment volume in the undeformed configuration.