Importance

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Abstract

An apparatus for preparing dialysate concentrate includes a vessel, a controllable valve for regulating water flow to the vessel, a first sensing device for detecting when the liquid has reached a lower level, a second sensing device for detecting when the liquid has reached an upper level, a controller selectively responsive to one of the sensing devices, and a positionable switch for selecting to which of the sensing devices the controller is responsive. The apparatus can be used in a method for preparing a dialysate concentrate by connecting a source of water to an inlet port, filling the vessel to the predetermined lower level by positioning the switch so that the controller is responsive to the first sensing device, opening the controllable valve, allowing the first sensing device to detect when the predetermined lower level has been reached and close the valve, adding a predetermined amount of powder and/or liquid to the vessel, agitating the contents of the vessel for a time sufficient to cause the added powder and/or liquid to dissolve into and/or mix with the water in the vessel to form a homogenous solution, filling the vessel to the upper level by positioning the switch so that the controller is responsive to the second sensing device, opening the valve, and allowing the second sensing device to detect when the upper level has been reached and close the valve.

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First Claim