A product intended to be mixed with water to prepare a solution with an electrolyte composition similar to that of blood (i.e., a dialysate) for the exchange of solutes with blood through a semi-permeable membrane in the dialyser of a haemodialysis system. It is intended to remove metabolic waste from the blood to help maintain physiological blood electrolyte and pH levels. The product typically includes glucose and salts of the following constituents: sodium, potassium, magnesium, calcium, chloride, and anions of weak acids [e.g., bicarbonate (HCO3), acetate, citrate]. It is supplied as a solution or a dry powder. After application, this device cannot be reused.