Patent ID: 6599746
Filing Date: 2003-07-29
Classification: G01N,Y10T

Abstract:
Calibration fluid for calibration of a sensor for measuring a blood value, comprising (i) a biocompatible electrolyte that at 37Â° C. exhibits a concentration of bicarbonate ions of about 24 mmol/lÂ±5 mmol/l, a pH value that is in the range of 5 through 9 including a value 7.41, and has an ionic strength of about 155 mmol/lÂ±10 mmol/l, and (ii) other ion types contained in normal, physiological blood, wherein said ion types are contained in the fluid in concentrations substantially equivalent to normal physiological concentrations of said ion types in blood such that a diffusion voltage of less than 1 mV occurs at a boundary surface between the fluid and normal, physiological blood; said fluid further comprising an organic physiological buffer.