Measuring chemical properties of a sample fluid in dialysis systems

摘要

In one aspect of the invention, a method includes determining an amount of carbon dioxide (CO2) in dialysate flowing through a dialysis system using a CO2 sensor associated with the dialysis system, determining, using a pH sensor associated with the dialysis system, a pH level of the dialysate, and calculating a level of bicarbonate in the dialysate based at least in part on the determined amount of CO2 measured in the gas and the determined pH level of the dialysate.

主权项

1. A method in a dialysis system comprising a carbon dioxide (CO2) sensor and a pH sensor, the method comprising:
causing the dialysate to flow into a chamber that comprises a gas-permeable membrane and a material that is configured to alter an appearance of the material based at least in part on a pH level of the dialysate, wherein the chamber is removably attached to the dialysis system; determining an amount of carbon dioxide (CO2) in dialysate flowing through a dialysis system using a CO2 sensor associated with the dialysis system; determining, using a pH sensor associated with the dialysis system, a pH level of the dialysate; and calculating a level of bicarbonate in the dialysate based at least in part on the determined amount of CO2 in the dialysate and the determined pH level of the dialysate, wherein the pH reactive material and the gas-permeable membrane align with the pH sensor and CO2 sensor respectively.