Bayer HealthCare Rapidlab 800 - Manual (Page 537)

Performance Characteristics EĆ11
840 System Performance Characteristics
All performance data presented in this section were generated using
840 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 840 system.
Precision on Controls
Quality control (QC) materials and calibration verification materials (CVM) were
analyzed on the 840 systems. The results are presented here.
Precision on aqueous quality control materials was estimated using three 840
systems. At least seven runs per instrument were made over five days. Two
replicates of each control level were analyzed in each run.
Table E-9 summarizes the results of the 840 system precision on QC materials.
Table EĆ9.āă840 QC Precision Results
Parameter Level n Mean WRSD * TotSD [
pH6.5 1 48 7.165 0.001 0.002
2 48 7.426 0.001 0.002
3 46 7.623 0.001 0.002
pCO
2
1 48 71.7 0.50 1.27
2 48 44.1 0.12 0.63
3 46 22.4 0.12 0.56
pO
2
1 48 57.6 1.20 1.67
2 48 100.7 0.75 1.77
3 46 149.1 1.11 2.31
* WRSD = within-run standard deviation
[
TotSD = total standard deviation