Abbott i-STAT Alinity Operation Manual page 131

93
Complex solutions such as blood deviate slightly from Nernstian behavior due to interfering ions and
matrix effects that result in junction potentials. By including selectivity coefficients in the Nernst
equation (Nikolsky equation), these effects can be minimized. By characterizing the reference electrode
in different solutions, effects of matrix on the reference junction potential can also be minimized.
Rev. Date: 02-Nov-2022
i-STAT Alinity — System Operations Manual Art: 745524-01 Rev. I