RADIOMETER ABL800 FLEX - Additional Information about FLEXMODE

5. Performance characteristics ABL800 FLEX Reference Manual
Additional information about FLEXMODE
Introduction
With the FLEXMODE
• Varying sample volumes can be introduced to obtain a given parameter profile,
and
• Two different parameter profiles can be reported for the same sample volume as
the sample volume intervals overlap one another.
See the ABL800 FLEX Operator’s Manual, chapter 4, page 4-3, for an overview of
sample volume intervals and parameter profiles.
Most of the variation contributed by the difference in sample volume and
parameter profile is included in the performance test results (bias, repeatability and
imprecision) given in this chapter. Special tests with emphasis on extreme
scenarios were conducted. The following scenarios were studied:
• Bias and repeatability for minimum and maximum sample volumes
• Bias and repeatability for parameter profiles with same sample volume.
These special studies were conducted for each of the individual parameter profiles.
The parameters with the variation exceeding the Performance Characteristics are
listed below.
Worst-case
observations
Sample volume < 55 µL:
Parameter Values Bias Repeatability
pH 7.15
7.40
0.015
0.013
0.005
0.005
pCO
2
(mmHg) 29
80
1.0
-2.9
0.9
2.6
pO
2
(mmHg) 130
230
3.0
-3.7
3.9
3.6
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