Abstract: A water container for purifying water. The water container includes an opening configured to receive water, a container body arranged to enclose the water and a water purifying unit configured to purify the water. The water purifying unit includes an at least partially transparent plate, which includes a coating of metal-oxide nanoparticles on a first side facing the container body, wherein the first side is configured to be in contact with the water, and an ultraviolet light module configured to radiate towards a second side of the at least partially transparent plate such that light from the ultraviolet light module at least partially passes through the at least partially transparent plate. Also, a method for purifying water within a water container.

Abstract: A system configured to deliver water in different purification states. A water valve selection unit to receive a purified water flow from a water purifier via a first valve and to receive an unpurified water flow from a water source via a second valve. The water valve selection unit to direct a water flow including one of the purified water and the unpurified water through an exit portion. A tap to receive the water flow from the exit portion, and to deliver the water flow to a user. A control unit to control the water valve selection unit to regulate a purification state of the flow. The control unit to inform the user of the purification state of the flow delivered by the tap. The water valve selection unit includes a measuring element to measure a volume of the flow that passes the exit portion.

Abstract: A water container for purifying water. The water container includes an opening configured to receive water, a container body arranged to enclose the water and a water purifying unit configured to purify the water. The water purifying unit includes an at least partially transparent plate, which includes a coating of metal-oxide nanoparticles on a first side facing the container body, wherein the first side is configured to be in contact with the water, and an ultraviolet light module configured to radiate towards a second side of the at least partially transparent plate such that light from the ultraviolet light module at least partially passes through the at least partially transparent plate. Also, a method for purifying water within a water container.

Abstract: A method of purifying air for inhalation. The method includes the steps: use of an ionizing device, electrically charging airborne particles; outputting the charged airborne particles, and filtering air through a filter included in a respiratory mask worn by a user present, wherein the filter includes filter fibers of a material attracting at least some of the charged airborne particles. A related system for purifying air for inhalation is also provided.

Abstract: An improved method is disclosed for cleaning a flow of gaseous fluid, such as room air, from particles present in the fluid, the gaseous fluid being ionized, and using a conductive grid placed across and upstream of the filter for protecting the filter from being charged by free ions. An air purifier filter cartridge using the ion-intercepting grid of the invention is also disclosed. The grid may be connected to or electrically insulated from the ionizer ground potential, with equal effect.

Abstract: An improved method is disclosed for cleaning a flow of gaseous fluid, such as room air, from particles present in the fluid, the gaseous fluid being ionized, and using a conductive grid placed across and upstream of the filter for protecting the filter from being charged by free ions. An air purifier filter cartridge using the ion-intercepting grid of the invention is also disclosed. The grid may be connected to or electrically insulated from the ionizer ground potential, with equal effect.