Patent ID: 7067061

Claim:
A method for preparing a medical liquid from a liquid and two concentrated solutions, comprising the following steps: circulating the liquid in a preparation conduit; injecting into the preparation conduit, at a first injection flowrate Q 1 , a first concentrated solution containing at least sodium, potassium, and calcium and/or magnesium; injecting into the preparation conduit, at a second injection flowrate Q 2 , a second concentrated solution having, with respect to the first concentrated solution, the same concentration of sodium and of calcium and/or magnesium and a different concentration of potassium; and regulating the first injection flowrate Q 1 and the second injection flowrate Q 2 such that at any given time a diluted solution resulting from a mixing of the liquid and the first and second concentrated solutions has a desired concentration of sodium and of calcium and/or magnesium and a desired concentration of potassium.