Roche Diagnostics
C-34
Operator’s Manual · Version 3.4
8 Data analysis methods Cedex Bio analyzer
ISE measurements
Sol 1 Factor check
To check if a new ISE Solution 1 factor is correct, the rate values for the second ISE
Solution 1 measurement and its subsequent calibrator measurement of the main
calibration are used. With these rate values, together with the slope and the Sol 1
Factor, the concentration of each ion (sodium and potassium) in the ISE Solution 1 is
calculated.
The limits for all ISE modes are:
The Sol 1 F Dev flag is displayed if the check criteria are not met.
In addition, the Sol 1 factor must fulfill the following condition:
The Sol 1 F Dev flag is displayed if the check criterion is not fulfilled.
Concentration calculated for ISE Solution 1 using the Sol 1 Factor
determined during the main calibration.
Lower limit of the recalculated ISE Solution 1 concentration.
Upper limit of the recalculated ISE Solution 1 concentration.
Ion C
low
C
high
Sodium 148.8 mmol/L 151.2 mmol/L
Potassium 4.94 mmol/L 5.06 mmol/L
Table 7 Limits of recalculated ISE solutions
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