Bayer HealthCare Rapidlab 800 - Manual (Page 543)

Performance Characteristics EĆ17
850 System Performance Characteristics
All performance data presented in this section was generated using 850 systems.
The system used default correlation factors, and performed calibrations using the
default settings recommended by Bayer Diagnostics for optimum performance. All
reported values were corrected to 760 mmHg. The operating environment during
the collection of this data was normal room temperature (about 23
_C).
You should determine your own performance characteristics in your laboratory
with your 850 system.
Precision on Controls
Quality control materials and calibration verification materials were analyzed on
the 850 systems. The results are presented here.
Precision on aqueous quality control materials was estimated using four 850
systems. At least seven runs per instrument were made over ten days. Two
replicates of each control level were analyzed in each run.
Table E-14 summarizes the results of the 850 system precision on QC materials.
Table EĆ14.āă850 QC Precision Results
Parameter Level n Mean WRSD * TotSD [
pH 1 72 7.169 0.002 0.002
2 71 7.428 0.001 0.003
3 72 7.623 0.001 0.002
pCO
2
1 72 71.5 0.43 1.01
2 71 44.1 0.21 0.58
3 72 22.6 0.13 0.38
pO
2
1 72 58.3 2.64 3.25
2 71 98.2 1.93 3.32
3 72 142.2 1.90 2.92
Na + 1 72 113.1 0.20 0.81
(Continued)