The present invention relates to an acid concentrate dialysis composition an acid concentrate dialysis composition comprising a mixture of citric acid and citrate, having pH of less than 3.0, wherein the total concentration of citrate is between 35 mM and 450 mM, and wherein the amount of citric acid is more than 50 % of the total concentration of citrate. The acid concentrate dialysis composition is to be combined to form a dialysis solution having a total concentration of citrate of between 1 and 6 mM.
