Roche Cedex Bio User Manual

Roche Diagnostics
Operator’s Manual · Version 3.4 C-21
Cedex Bio analyzer 8 Data analysis methods
Photometric measurements
Calibration mode Exponential 5
The Exponential 5 mode is used to calculate nonlinear calibration curves. Five or six
calibrators can be entered.
The curve parameters are calculated with a maximum of 150 iterations, using the
following equation:
Calibration checks
Curve Direction check This check determines if the direction of the calibration curve is correct. It is used to
generate the Curv Dir flag if calibrators are placed in the wrong order on the analyzer.
With ascending calibration curve:
With descending calibration curve:
The Curv Dir flag is displayed if the calibration curve direction is not correct.
Mean calibrator rate.
Calibrator values.
Curve parameters.
RM
std n
R
0
KACT
std n
ln⋅ BCT
std n
ln()
2
⋅ CCT
std n
ln()
3
⋅++[exp⋅+=
RM
std n
CT
std n
R
0
K
c
A, B, C,,
Concentration
A
n
A
3
A
x
A
2
A
1
C
1
C
2
C
x
C
3
C
n
Rates
Mean rate value of the standard with the highest analyte
concentration or activity.
Mean rate value of the standard with the lowest analyte concentration
or activity.
RM
std highest
RM
std lowest
0>–
RM
std lowest
RM
std highest
0>–
RM
std highest
RM
std lowest

Roche Cedex Bio Specifications

General

Brand	Roche
Model	Cedex Bio
Category	Measuring Instruments
Language	English