Patent ID: 8496824

Claim:
An apparatus for supplying a dialyser of a dialysis unit with a dialysing fluid, the apparatus comprising: at least one receiving unit for receiving only at least one dialysing fluid concentrate; means for providing water for a dilution of the at least one dialysing fluid concentrate; means for mixing the at least one dialysing fluid concentrate and the water in a first pre-set volumetric ratio to prepare the dialysing fluid, said means for mixing connected to the at least one receiving unit and configured to receive the at least one dialysing fluid concentrate therefrom; a means for setting a dialysing fluid flow rate Qd b during a dialysis treatment such that at the end of the pre-set treatment period T B , the at least one receiving unit is either empty or contains a pre-set residual volume of the at least one dialysing fluid concentrate; wherein the dialysing fluid flow rate Qd b is dependent upon a pre-set volume of the at least one dialysing fluid concentrate at a commencement of a dialysis treatment period, the first pre-set volumetric ratio, and the pre-set treatment period T B .