Patent ID: 6280634
Filing Date: 2001-08-28
Classification: A61L,A61M,B01D,C02F,F16K

Abstract:
A method of calibrating a dialysis machine to determine the volume of a dialysate flow path of said machine, said dialysate solution flow path including a dialysate preparation tank, comprising the steps of:introducing a known quantity of electrically conductive chemicals into said dialysate preparation tank;filling said dialysate solution flow path with water;mixing said chemicals with said water to form a solution;measuring the conductivity of said solution; andcalculating said system volume (V.sub.sys) according to the relation:V.sub.sys =M/(a.sub.1 r+b.sub.1)where M is the mass in grams of said chemicals;a.sub.1 and b.sub.1 are a coefficient of linearity and a constant of linearity, respectively, for said chemicals; andr is said measured conductivity of said solution.