Roche Diagnostics
Instructions for Use · Version 13.0 225
cobas b 123 POC system 8 Calibration
Automatic calibrations
Automatic calibrations
q
You cannot perform measurements, QC measurements or replacement routines during
most automated calibrations.
You can stop a 2P calibration or system calibration by pressing the button. 1P
calibrations cannot be stopped by pressing the button.
System calibration
q
You can set a permanent start time for the system calibration, so it can occur when the
system is not in use, or the system’s workload is lower.
This calibration is performed every 24 hours (fixed interval, user-defined starting
time). It consists of:
o Wavelength calibration of the polychromator (optional)
o Calibration of the oximeter module lamp (optional)
o Cuvette layer thickness calibration (optional)
o 2-point calibration of all parameters
o O
2
air calibration
o Determining the O
2
value of the standby solution
u Configuring calibration settings (p. 230)
2P calibration
2P calibrations are performed every 4, 8 or 12 hours (default). The measurement
parameters are calibrated with 3 solutions (CAL 1, CAL 2 and standby solution) of
different concentrations. It consists of:
o Cuvette layer thickness calibration (optional)
o 2-point calibration of all parameters
u Configuring calibration settings (p. 230)
1P calibration
The time interval between 1P calibrations is 60 minutes. The measurement
parameters are calibrated using CAL 1 solution. It consists of:
o 1-point calibration of sensor parameters
PO
2
calibration
The PO
2
calibration measures the oxygen content in the standby solution.
The PO
2
calibration is only available when your Sensor Cartridge is in the RUN-IN
phase. After the RUN-IN phase, the PO
2
calibration is part of the system calibration.
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