Abstract: Filter cartridge for the improvement of the quality of drinking water, consisting of a vessel (10) with sieve-type covered apertures (18, 44) filled with a compound (16) of ion exchange resin and/or absorbent carbon together with a bacterio-statically effective material, in particular silver, in dissociable form, through which the water to be treated is conducted mainly in a downwards direction, the vessel having a collection space (48), for a limited quantity of water, originating from the vessel's floor (42), which is separated from the outlet aperture (44). Thus drying out of the cartridge through non-use over a longer period of time or through misuse is prevented and the effectiveness of the bacterio-statically effective material is retained to combat the feared multiplication of germs in the treatment compound.

Abstract: An apparatus for the treatment, in particular softening and/or completed desalination of throughflowing water, consisting of a wall bracket (10) and a cartridge (12) which can be held by this bracket in an upright position, being filled with a treatment compound. The cartridge has a bottom connection aperture for supplying the water to be treated and a top connection aperture for an open-ended drainage line, which in accordance with the invention is formed at least partially by a channel (52, 56, 60, 80) within the wall bracket (10). The wall bracket (10) has in addition a mechanical fixture and a sealing assembly (44, 76) for suspended fixture of the cartridge (12) by its upper end and for the seal-tight connection of the upper connection aperture with the channel (52, 56, 60, 80) in the wall bracket (10). Cartridge replacement is considerably simplified thereby.

Abstract: An apparatus for improving the quality of potable water. A housing receives a replacable cartridge having an ion exchange and a bacteriostatically effective material. The cartridge is an essentially closed upright container. Partition walls divide the container into a first chamber having an inlet from which the flow is downward and a second chamber through which the flow is upward leading to a discharge opening. The inlet opening of the cartridge is higher than the discharge opening and both openings have particle filters. The second chamber extends up beyond the level of the inlet opening and is ventilated at the top. A vertical pipe inside the housing is sealingly attached at the discharge opening of the cartridge. This vertical pipe opening has its top end below the inlet opening and the vertical pipe opens with its top end below the inlet opening into a discharge passage.