The present invention concerns a dialysis acid precursor composition for use during preparation of a dialysis acid concentrate solution and for mixing with water and a bicarbonate containing concentrate into a ready-for-use dialysis solution. Said dialysis acid precursor composition consist of powder components comprising sodium chloride, at least one dry acid and at least one magnesium salt, and optionally potassium salt, calcium salt, and glucose. According to the invention said at least one magnesium salt and said optional glucose, are present as anhydrous components in said dialysis acid precursor composition.本發明關於一種透析酸前驅物組成物,其係供透析酸濃縮物溶液的製備期間使用及用於與水及含碳酸氫鹽之濃縮物混合成即用型透析溶液。該透析酸前驅物組成物係由包含氯化鈉、至少一種乾酸及至少一種鎂鹽與隨意的鉀鹽、鈣鹽及葡萄糖之粉末組分所組成。根據本發明,該至少一種鎂鹽及該隨意的葡萄糖係呈無水組分存在於該透析酸前驅物組成物中。
