Roche cobas b 221 system User Manual

Roche Diagnostics May 2009
Service Manual · Version 9.0 A-35
cobas b 221 system 2 Fluid actions
Calibration
Na conditioning
This procedure is necessary to retain the sensitivity of the Na electrode. The Na
conditioner is in the S2 Fluid Pack and is aspirated into the ISE measuring chamber
with the vacuum pump and the main pump through the T&D disk (position 7) and
the sample inlet path through SS2 and SS1.
After this procedure the measuring chamber area is washed, and the tHb/SO
2
or
COOX module is also washed and Mix1 is prepared.
e For more information, see:
Washing the measuring chamber vicinity on page A-27
Washing tHb/SO
2
or COOX and preparing Mix1 on page A-28
In the case of the tHb/SO
2
module a calibration is conducted during the washing
procedure by measuring the rinse solution values.
A Vacuum pump
B Main pump
C Na electrode
D T&D module (position 7)
E Waste separator
F Na conditioner
Figure A-20 Na conditioning
A
F
B
C D
E

Roche cobas b 221 system Specifications

General

Brand	Roche
Model	cobas b 221 system
Category	Medical Equipment
Language	English