Patent ID: 8828232

Claim:
A method of making a dialysate and circulating the dialysate comprising: (a) mixing a base concentrate, an acid concentrate, and water so as to produce dialysate, said base concentrate comprising a citrate, bicarbonate and a salt, wherein a sodium contribution of said base concentrate to the dialysate ranges from 100 to 150 mEq/L and said acid concentrate comprising an acid selected from the group consisting of acetic acid, citric acid and lactic acid, wherein (i) a sodium contribution of said acid concentrate to the dialysate ranges from 10 to 20 mEq/L, (ii) the combination of the sodium contributions of said base concentrate and said acid concentrate to the dialysate ranges from 125 to 150 mEq/L; (b) measuring conductivity of said dialysate with a conductivity sensor; and (c) circulating said dialysate to a dialysate side of a dialyzer if said conductivity of said dialysate ranges from between about 12.5 and about 15.7 mS/cm and not circulating the dialysate if said conductivity falls outside of said conductivity range.