PROBLEM TO BE SOLVED: To provide a three-pack type dialysis agent with which it is possible to set the total acetic acid ion content in a dialysis fluid at a low value and which is excellent in terms of the storage stability and can be reduced in the odor of acetic acid, and also with which it is possible to prepare a dialysis fluid so that the bicarbonate ion concentration can be changed as needed, while the concentrations of trace metal ions such as potassium ions, calcium ions, and magnesium ions are kept constant.SOLUTION: The three-pack type dialysis agent comprises agent S comprising sodium chloride, agent B comprising sodium bicarbonate, and agent A comprising electrolyte ingredients other than sodium chloride and sodium bicarbonate. By making the agent A contain acetic acid and an acetic acid salt and satisfy that the molar ratio of acetic acid to acetic acid salt is 1:0.5-2, a bicarbonate dialysis fluid having a total acetic acid ion concentration of 2 mEq/L or higher but less than 6 mEq/L can be prepared. The agent A not only is excellent in terms of the stability of the ingredients but also can be reduced in the odor of acetic acid. According to the three-pack type dialysis agent, by controlling the amounts of the agents S, B, and A to be added when preparing a dialysis fluid, the bicarbonate ion concentration and/or sodium concentration in the dialysis fluid can be changed.COPYRIGHT: (C)2015,JPO&INPIT【課題】本発明の目的は、透析液中の総酢酸イオン含量を低い値に設定可能で、しかも保存安定性に優れ、酢酸臭を低減でき、更に、必要に応じて、カリウムイオン、カルシウムイオン、マグネシウムイオン等の微量金属イオン濃度は一定に維持しつつ、重炭酸イオン濃度を任意に変化させ得る透析液を調製することができる3剤型透析用剤を提供することである。【解決手段】塩化ナトリウムを含むS剤と、重炭酸ナトリウムを含むB剤と、塩化ナトリウム及び重炭酸ナトリウム以外の電解質成分を含むA剤を含む3剤型透析用剤において、A剤に、酢酸及び酢酸塩を含有させ、且つ酢酸:酢酸塩のモル比が1:0.5~2を充足させることによって、総酢酸イオン濃度が2mEq/L以上6mEq/L未満となるような重炭酸透析液が調製可能となり、当該A剤中の成分の安定性が優れていることに加え、酢酸臭を低減できる更に、当該3剤型透析用剤によれば、透析液の調製時にS剤、B剤、及びA剤の添加量を調節することによって透析液中の重炭酸イオン濃度及び/又はナトリウム濃度を変化させることもできる。【選択図】なし
