Roche cobas b 221 system User Manual

Roche Diagnostics May 2009
A-40 Service Manual · Version 9.0
2 Fluid actions cobas b 221 system
Calibration
The MSS cassette is calibrated in the following sequence:
First a MSS standby solution packet is positioned through a metal pipe in the sample
distributor and valves V10 and VSI into the MSS measuring chamber which is called
"Ref. point D1". Following this one of the calibration solutions (CAL 1, CAL 2, CAL 3
or CAL 4) is aspirated and positioned into the MSS measuring chamber. After this
another MSS standby solution packet is positioned into the MSS measuring chamber
which is called "D2" and last followed by a third MSS standby solution packet called
"D3".
For instruments with Urea installed only: The reference measurement for urea is done
by aspirating reference solution after positioning the "D1" and the "D2" packets.
e For more information, see:
CAL 1 Calibration on page A-41
CAL 2/CAL 3/CAL 4 Calibration on page A-42

Roche cobas b 221 system Specifications

General

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