The invention relates to a new dry concentrate for the production of medical solutions, more particularly dialysis solutions, which comprise electrolyte and buffer components and an osmotic agent, said concentrate comprising magnesium carbonate rather than magnesium chloride. The use of magnesium carbonate as the electrolyte avoids the formation of slurries. The use of anhydrous glucose as an osmotic agent, and optionally spatial separation of this osmotic agent from the other components, also avoids the occurrence of "caking" in the concentrate. The occurrence of "caking" is also improved by charging the sodium hydrogencarbonate buffer component together with sodium chloride and in isolation from all other components. This concentrate is particularly suitable for use in multichamber pouch systems. The concentrate is notable for good dissolution capacity and improved storage stability.
