| 摘要 |
A cartridge for treating water, the cartridge capable of releasably engaging a water treatment device. The cartridge includes a housing, an inlet for introducing untreated water into the cartridge, an outlet port for egress of treated water from the cartridge, and a treatment media for treating untreat ed water. The treatment media is in fluid communication with the inlet and the outlet port. The cartridge further includes a first tube having an inside surface, an outside surface, a proximal end, and a distal end, where the inside surface and/or the outside surface is a sealing surface. The cartridg e further includes a second tube having an inside surface, an outside surface, a proximal end, and a distal end, where the inside surface and/or the outside surface is a sealing surface. The first tube extends from the housing and surrounds the outlet port. At least a portion of the first tube or the secon d tube surrounds the other such that a gap is formed between the first tube an d the second tube. The gap is capable of holding a volume of water. The first tube extends outwardly from the housing and surrounds the outlet port, and t he second tube extends outwardly from the housing and surrounds the first tube such that a gap is formed between the first and second tubes, the gap capabl e of holding from about 0.1 ml to about 6 ml of water when the cartridge is no t sealingly engaged to the water treatment device, and such that the distal en d of the second tube extends a greater distance than the distal end of the fir st tube from the housing, and such that at least one of the sealing surfaces of the second tube extends a greater distance than at least of one of the seali ng surfaces of the first tube from the housing.
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